Lab Unlimited UK

The Carl Stuart Group was founded in 1984 by Stuart and Gillian Smith. From a small beginning our business has grown to encompass many services and products, covering different market sectors and geographical regions. The focus of our business, however, remains the same. We are a customer orientated company and strive to meet and exceed your expectations in everything we do.

As our portfolio grew we decided to present and promote our product and technical service offerings under distinct brands.  The Laboratory instrumentation, consumables and technical & integration services are promoted under Lab Unlimited.

The Lab Unlimited product portfolio offers laboratory/analytical products from more than four hundred leading manufacturers. A substantial part of this offering is published on this very site. We also produce a printed catalogue that can be requested by emailing us.

  1. Why Elastometers Matter in Bioreactors?
    2 December 2019

    Biocompatible wetted materials are important to avoid contamination. Learn about the importance of these components in Bioprocessing applications, with this article from Alicat Scientific - the leading company in flow solutions.

    An article by Mic Chaudoir and Zane Forier

    Bioprocessing has very specific requirements for wetted materials, in order to avoid contamination of the bioreactor environment. One of the potential contaminants are materials outgassed from elastomers, typically adsorbed onto elastomers during polymerisation.

    While outgassing most commonly occurs under vacuum conditions, it can be a concern in any situation where a pressure drop is present (such as gas input lines for bioreactions). A number of studies have demonstrated outgassing from elastomeric components under a variety of conditions.1

    Outgassed components are of concern as they are thought to be inhibitory towards microbial growth and have been shown to have toxic effects in whole animal studies.2

    The ASME Bioprocessing standards call out for specific materials used in the construction of bioprocessing equipment.3

    While mass flow meters typically lie outside of the sterile boundary and do have contact with the final product, it is still good practice to follow the BPE-2016 standards.

    Many high performing mass flow meters utilise elastomers to take advantage of this material’s superlative sealing properties, which result in lower leak rates and higher precision mass flow measurement. Mass flow meters also require rigid materials (ranging from inexpensive ABS plastics to exotic stainless steels) for their flow bodies and process connections.

    Outgassing is a concern, as outgassed components would likely pass through sterilizing filters and are a potential source of process contamination. Therefore the BPE-2016 standards are often applied to mass flow meters, regardless of their position relative to the sterile boundary. 316L stainless steel can be used for elements in the flow path, including flow bodies and laminar flow elements.

    Less frequently considered, but of greater potential concern are the elastomeric components used in high-performance mass flow meters. The BPE-2016 standards recommend using certain corrosion-resistant, high durability elastomers, including EPDM (Ethylene Propylene Diene), FKM (Fluoroelastomer) and FFKM (perfluoroelastomer).

    The standards further recommend USP VI Elastomers for components likely to be in contact with the final product being produced, or with liquids in the same environment. If this is a concern, only USP Class VI elastomers with good permeation resistance should be used.


    Outgassing is only able to occur after materials have first been permeated – so resistance to permeation is the critical factor in preventing subsequent outgassing. Marco rubber and plastics has published a nice comparison of permeation rates of common elastomers indexed with commonly used gasses.4

    Additionally, elastomers used can also be FDA certified. USP Class VI and FDA certified elastomers have minimal reactivity and are certified safe for hygienic use.5,6

    While Alicat uses several types of elastomer in several products, Viton brand FKM (Fluoroelastomer ASTM D1418) meets the BPE 2016 standards, as well as being available in USP Class VI FDA certified form. Viton branded FKM also carries the implicit guarantee of Dupont’s high-quality manufacturing standards. Viton’s outstanding sealing characteristics, permeation resistance, high performance and available certifications mean that it’s often the preferred elastomer for these applications.

    It is also good practice to use only Animal-Derived Ingredient (ADI) free products in bioprocessing. This avoids another potential source of contamination, as well as being an ethically sound practice. Choosing a mass flow meter which meets these requirements for compatibility should be an important part of any purchasing decision – and helps avoid potential contaminations of bioprocesses.

    Lab Unlimited and Alicat Scientific are very aware of the need to prevent contamination of the fragile bioprocessing ecosystem. This includes the use of appropriate wetted materials, minimal outgassing and products free from contamination.

    Contact us today to see how we can help you improve your Bioprocess application with fast, precise and clean flow.

    Why Elastometers Matter in Bioreactors?
  2. How YSI Sensors Work for in-situ Water Testing
    2 December 2019

    Watch a webinar series, made in partnership with Cleveland Water Alliance, covering the principles and practices in water quality monitoring, regarding YSI's Algae, Turbidity, Conductivity, pH & ORP, as well as Dissolved Oxygen sensors.

    The Cleveland Water Alliance and YSI, a Xylem brand, created a 5-part educational webinar series on sensing technologies, for everyone working with water quality monitoring, from students and undergraduates to professionals.


    The series covered the principles and practices of water quality monitoring, focusing each session on a different parameter: Algae, Turbidity, Conductivity, pH, Oxidation Reduction Potential (ORP), and Dissolved Oxygen.

    In each webinar, an expert from YSI described why and what it is important to monitor for each parameter, how monitoring technologies for that parameter have evolved, and the underlying principles of how they work.

    Also, real-world examples were presented, to showcase how each sensor type operates in practice, revealing benefits or limitations that all users should understand and be aware of.


    Couldn’t attend the live presentations? No problem!


    The live webinar series has now ended but you can still watch the recordings to learn more about how each different sensor works. Simply click the one you are interested in, to see the recording on the YSI website.

    How Algae Sensors Work | June 11, 2019

    How Turbidity Sensors Work | July 9, 2019

    How Conductivity Sensors Work | August 6, 2019

    How pH & ORP Sensors Work | September 10, 2019

    How DO Sensors Work | October 8, 2019

    Would you like to know more information regarding the YSI Sensors we have available? Be sure to check out our website or contact our Sales Team. We will be happy to help you with your queries.

    How YSI Sensors Work for in-situ Water Testing
  3. Do you know how Dissolved Oxygen Sensors work? A FREE Webinar
    2 December 2019

    The Cleveland Water Alliance and YSI, a Xylem brand, are proud to offer a FREE educational webinar series on sensing technologies for everyone working with water quality monitoring, from students and undergraduates to professionals.

    From sustaining aquatic life to the tight control of wastewater treatment, dissolved oxygen (DO) plays a role in nearly every water quality application.

    Topics covered in this webinar:

    • Applications where DO measurement is critically important
    • The evolution of sensor technologies for measuring DO in the field
    • The underlying principles of how the most current optical DO sensors work
    • Real-world examples that demonstrate both the value and limitations of field-based measurements of DO

    The live presentation of this webinar was on October 8th, 2019 at 6pm Irish Time. Therefore registrations for this webinar are now closed.

    Please let us know if you are interested in learning more about the YSI Dissolved Oxygen Sensors. Our Sales Team will be happy to help you!

    Do you know how Dissolved Oxygen Sensors work? A FREE Webinar
  4. Environment Ireland 2019: The Must-Attend Conference for Ireland’s Environment
    2 December 2019

    Lab Unlimited to be present at Ireland’s major environmental policy and management conference | 2nd of October | Croke Park | Dublin

    Organised in association with the Environmental Protection Agency (EPA) and the Department of Communications, Climate Action and Environment, this is Ireland’s biggest and most important environmental policy and management conference.

    Now on its 15th year, the conference programme aims to tackle important environmental issues such as climate change, highlighting ways in which both policy-makers and industry can move forward to protect the environment.

    Lab Unlimited will be present at this year’s Environment Ireland Conference showcasing a great selection of water monitoring solutions:

    These solutions from our Environmental portfolio not only make sure you measure and gather accurate data every time, but also help optimise your time in the lab.

    This year’s programme will also feature a public health and air quality session. According to the organisation, “While EU air quality standards are not currently exceeded in Ireland, the health-related external costs from air pollution are thought to be more than €2 billion annually.” Waste will also be a focus area at the conference as recent statistics show an increase in Ireland’s plastic packaging waste per person.

    Check out the full programme and more information on the speakers on the Environment Ireland Conference’s website.

    Environment Ireland 2019: The Must-Attend Conference for Ireland’s Environment
  5. How pH and ORP Sensors Work: Principles and Practice in Water Quality Monitoring Webinar
    2 December 2019

    The Cleveland Water Alliance and YSI, a Xylem brand, are proud to offer a FREE educational webinar series on sensing technologies for everyone working with water quality monitoring, from students and undergraduates to professionals.

    The pH of a water body can affect nearly all aquatic life in a system, and the oxidative-reductive potential is a related, but underappreciated parameter particularly in environmental and wastewater applications.

    This webinar will be focusing on:

    • Reasons to measure both pH and ORP
    • The principles of operation of Ion Selective Electrodes (ISEs) as they’ve been adapted from the laboratory to the field
    • Best practices for maintaining and troubleshooting measurements
    • Real-world practice to demonstrate both the value and limitations of field-deployed pH and ORP sensors.

    The live presentation of this webinar was on September 10th, 2019 at 6pm Irish Time. Therefore registrations for this webinar are now closed.

    Please let us know if you are interested in learning more about the YSI pH and ORP Sensors. Our Sales Team will be happy to help you!

    How pH and ORP Sensors Work: Principles and Practice in Water Quality Monitoring Webinar
  6. Mission: Water - THE Magazine for All Water Related Issues
    2 December 2019

    The Mission: Water magazine is published by the leading water and environmental company YSI, a Xylem Brand. Its mission is to bring you not only the world's most current and important water matters but also to show you how people dealing with these problems are facing and overcoming their challenges.


    Through this FREE magazine you will learn about professionals around the world who are Minding the Planet, read articles featuring subject matter spanning different continents and also catch up on technical tips and educational resources from the world-renowned Xylem brand.

    Latest issue, No. 6 “From Cells to Satellites”:

    Red Tide Monitoring Efforts – A look at Florida’s recent battles with red tide and how the state’s approach to managing the ecological fallout has evolved with new technology.

    Nord Stream 2 Discoveries – Read about the development of the Nord Stream2 natural gas pipeline in northern Europe and the hidden discoveries at the bottom of the Baltic Sea.

    To download your copy of the Mission Water Magazine Issue #6 please fill out the form on the right.


    Interested in back-issues of Mission: Water?


    Fill in the form to the right to access the full repository of all Mission: Water issues including:

    Issue 1 – Sacred Stream
    Issue 2 – Life After Horizon
    Issue 3 – Water Heroes
    Issue 4 – Eye of the Storm
    Issue 5 – Summer on Ice

    Should you like to know more regarding the water quality monitoring products we have available, please contact our Sales Team.

    Mission: Water - THE Magazine for All Water Related Issues
  7. New Generation of Glass Lab Bottles
    2 December 2019

    The bottle is designed to be ergonomic and provide the user with the safest most comfortable experience. This is achieved through a number of ingenious innovations such as a glass thread and shortened cap thread, specially contoured gripping zones, and designated labelling areas on both the bottle and cap.

    See below for more details on these great features. Read More...


    DURAN® YOUTILITY is an award winning system!!

    New Generation of Glass Lab Bottles
  8. Does Your Temperature Control Application Need More Power?
    2 December 2019


    The JULABO CORIO™ circulators have been developed with pioneering technologies to satisfy the demands of research and industrial laboratories around the world.


    Intelligently designed to the core, the CORIO™ models stand out from the crowd due to their sleek modern design, easy and time-saving operation with user-friendly access to all relevant functions.


    As JULABO understands that circulators play an important role in the daily work of many labs, all models meet the highest standards in terms of precision, reliability, and functionality.

    The new CP models add to the CORIO™ family more powerful refrigerated circulatorsheating immersion circulators and heating circulators.

    The extended temperature range of -50°C to +200°C and a higher pump capacity of 27 l/min or 0.7 bar make the CORIO CP the ideal partner for the safe temperature control of simple external applications.

    In addition to these features, the CORIO CP offers 3-point Absolute Temperature Calibration (ATC3) and guarantees the reliable compensation of temperature deviations even when used in larger baths. The CORIO CP can also be integrated into complex process structures thanks to the RS232 interface.


    Request a Quote or Book a Demo Today!

    Other Features complete the intelligent product design:

    • Integrated timer
    • Bright, easy-to-read display
    • Controls and safety functions are operated from the front
    • Mains switch on the top of the circulator switches the circulator and refrigeration unit on and off simultaneously

    JULABO also offer a comprehensive range of accessories that enables the flexible adaptation of the models to the individual requirements of a wide variety of applications.


    What’s Available?


    Refrigerated Circulators

    The refrigerated circulators of the new CORIO CP series are perfect for all standard tasks and routine work in your laboratory, offering great reliability and robustness.

    With a temperature range of -50°C up to +200°C and optimised design of cooling coil, the models offer more space in the bath with an enlarged filling volume and guarantee short heat-up and cool-down times.


    See the CORIO™ Refrigerated Circulator models available.


    Heating Immersion Circulators

    For working temperatures from +20°C to +200°C. Complete with a universal bath attachment clamp for custom containers, this model is suitable for precise, internal standard temperature control tasks. Also, the CP Immersion Circulator can be equipped with an optional pump set for temperature control of external applications.


    See the CORIO™ Heating Immersion Circulators models available.


    Heating Circulators


    The CORIO CP Heating Circulators feature professional technology for demanding applications. These units facilitate internal temperature control in the bath tank or control of externally connected applications. For working temperatures from +20°C to +200°C.

    The new CP range is a great addition to the CORIO™ series. It reiterates the temperature control precision already provided by the CORIO™, and adds more power to your application, elevating this series to another level.

    See the CORIO™ Heating Circulators models available.


    Want to Know More?

    Should you like to get a quote, book a demo or learn more about the new CORIO CP range, please contact our Sales Team.

    Also, be sure to download the Corio™ Brochure and check out our website to see the full CORIO™ range available.


    Does Your Temperature Control Application Need More Power?
  9. Predictions for Continuous Flow Chemistry
    2 December 2019

    What does the future hold for continuous processing and flow chemistry in the upcoming years?


    Looking at general shifts in the industry, as well as based on conversations with chemists and business leaders from multiple industries, the Syrris flow chemistry expert was able to reach some important considerations regarding the future of flow chemistry:


    Curious as to how continuous flow chemistry – or a combined batch and flow approach – could enable your lab to perform faster, more reliably, and with more reproducible chemistry?


    Then continue reading!

    If you have questions regarding Flow Chemistry that are not covered by this article, or want to discuss your chemistry application further, we will be happy to help.

    Contact Us Today!


    Continuous flow scale-up will be big business

    Continuous lab-scale flow is a fast-growing market thanks to the commercial availability and ease-of-use of lab scale flow chemistry systems. Lab scale flow has a number of benefits over traditional chemistry methods – some of which are outlined here in a previous blog post "9 Reasons to Perform Flow Chemistry”. In 2019, we predict that continuous flow scale-up systems will help the transition between research and discovery, and process development at pilot scale and beyond.

    There are already a dozen existing API manufacturing processes that have been granted FDA approval and this will only increase following the FDA’s drive towards more continuous manufacturing. This is already driving the need for a robust method of scaling from the lab to the pilot plant.

    Systems like the the Titan, a modular pilot-to-manufacturing scale continuous flow system, will help chemists develop their chemistry from lab-scale flow chemistry systems – such as the Asia Flow Chemistry System – to pilot and manufacturing scale production of their chemical processes.


    Automated reaction self-optimisation: rise of the machine (learning)

    A big area that has been developing for a few years is automated reaction self-optimisation, and we envision this becoming commercially viable in 2019. With the integration of reaction analytics and flow chemistry, this emerging technology will allow the user, via automated methods, to optimised reactions and methods via machine learning (AI).


    Reagentless chemistries on the rise

    Thanks to the “green” efficiencies they provide – and the increasing number of conversations we’re having with customers from various industries – we predict that the use of reagentless chemistries such as electrochemistry and photochemistry will become more of a focus.

    One of the reasons reagentless chemistries haven’t seen the traction they deserve is that performing them in traditional batch methods is notoriously difficult. Continuous flow chemistry systems make it easy, though.

    Standard lab apparatus has made access to these chemistries restricted; the benefits of running these processes in a continuous fashion allows easier access, along with added benefits such as precise control of electron and photon transmission to the reactor.


    Batch & Flow: Teamwork makes the dream work

    Combining batch and flow technologies will enable chemists to leverage the best of both synthetic techniques. Both batch and flow techniques offer unique advantages in different scenarios and combining both with automated control enables the widest range of chemistry to be carried out.

    This will be key in the development of multi-stepped, telescoped reaction methodologies.


    Reimagining old processes, such as API encapsulation

    As our understanding of the range of microfluidic applications increases, we can start to explore these benefits in other processes. The development of techniques such as targeted drug delivery by the encapsulation of API material in polymer matrices allows companies to reformat and reimagine current patents to extend their life.

    Both Syrris and Dolomite Microfluidics are at the forefront of developing novel microfluidic processes that can enable lots of these new applications.


    The future is end-to-end personalised medicine

    Beyond 2019: we see continuous flow chemistry as enabling personalised medicine in the future through end-to-end drug factories.

    Imagine factories and machines processing raw materials and producing a tablet at the end, tailored to the customer on demand. Continuous flow chemistry could make the “Star Trek Replicator” a reality – for medicine, at least!

    These processes already exist from raw materials to tablet, but they need to be heavily refined. Combining the unique benefits of batch and flow chemistry will enable these processes to be refined to the point of being commercially viable, allowing true end-to-end personalised medicines to emerge.

    Want to Know More About Continuous Flow Chemistry?

    Be sure to check out the range of chemistry automation solutions we have available on our website and have a read on other Automated Chemistry articles: 5 Benefits of Automated Chemistry Systems9 Reasons to Perform Flow Chemistry and Flow Chemistry: Basics & Key Elements

    If you have any questions or issues regarding continuous flow chemistry, be sure to contact our Sales Team. We will be happy to help you with all your chemistry needs and requirements.

    Predictions for Continuous Flow Chemistry
  10. LISA UV254 Sensor: Cutting edge UV-LED technology from TriOS
    2 December 2019

    LISA - The state of the art SAC254 sensor by TriOS

    The LISA UV sensor from TriOS combines long-lasting, energy-efficient UV-LED technology with a robust, durable design. By using unique nanocoated windows along with compressed air flushing, they allow for long operating times without cleaning - as do all TriOS sensors.

    Integration of the sensor into existing process control systems or external data loggers is made quick and easy due to the TriOS G2 interface.

    This makes the LISA UV sensors easily configurable through any standard web browser on a PC, tablet or smartphone. These sensors are also available with digital or analog output, in addition to the integrated network interface.

    Very versatile, the optical path length can be easily adapted to your application, at any time, by using different lens sockets. An automatic turbidity compensation is carried out by a second measuring channel.

    Through application-specific correlation LISA UV can be configured for direct output of BODeq, CODeq, TOCeq. A direct output of UVT254 is also possible.


    Main Features


    - Optical window with nano coating
    - Innovative UV-LED technology
    - No sampling or preparation needed for test samples
    - Without reagents
    - Real-time sensor


    Sewage treatment plants, Environmental monitoring, Drinking water, Monitoring of UV-disinfection systems

    Want to Know More?

    Should you like to know more about the LISA UV Photometers, please contact our Sales Team.

    Contact Us Today!

    LISA UV254 Sensor: Cutting edge UV-LED technology from TriOS
  11. Total Algae Sensor: Monitor Harmful Algal Blooms
    3 September 2018

    Harmful algal blooms (or HABs) are becoming more frequent, intense, and are now seen by many as a public threat. For this reason, now more than ever, water quality monitors and managers need reliable tools that can help them monitor, reduce, and manage the impacts of harmful algal blooms.

    Why is the Total Algae Sensor (TAL) from YSI the Right Tool to Fight Harmful Algal Blooms?

    They help with early detection by allowing easy collection of data on blue-green algae for data analysis with consideration of weather conditions as well as other important parameters.

    Built for the field, this sensor features welded titanium construction and military-specification connectors which are ideal for rugged conditions. Similar to other smart sensors, the TAL sensor has onboard memory, processing, and allows for sensor-zeroing to be performed on-site.

    Main Features:

    Detect the onset of an algae bloom as early as possible to plan your response
    Support a rational approach for the collection of samples for other laboratory analyses, saving you time and money
    Understand the seasonal and weather-related patterns of algae growth in your system
    Understand the relevance of other parameters like pH, dissolved oxygen, and temperature

    There are two sensors available:

    The Total Algae-Phycoerythrin (TAL-PE) for saltwater, used for monitoring marine cyanobacteria and the Total Algae-Phycocyanin (TAL-PC) a dual-channel fluorescence-based sensor, perfect for monitoring freshwater cyanobacteria. Bot are ideal for early detection of blue-green algae that could lead to harmful algal blooms.

    The Total Algae sensor is ideal for applications like beach monitoring, vertical or horizontal profiling, and source water monitoring for potentially toxic algae – especially when paired with the ProDSS multiparamter system or the EXO sondes.

    Want to Know More?

    Visit our website:

    Total Algae Sensor: Monitor Harmful Algal Blooms
  12. Sun’s Out: Bring on the Sunburn Gel
    27 August 2018

    Sunburn Treatment Gel is very important for everyone around this time, especially after one has enjoyed the sun a little bit too much. It naturally cools and soothes the burn while moisturising the skin.

    Summer goes on with high temperatures, we are sharing an application note from the experts at Brookfield Ametek, regarding the measurement of viscosity in Sunburn Treatment Gel.

    Three different methods were tested for this paper, using different Brookfield Viscometers/Rheometers, spindles and speed - all appropriate to perform testing in creamy, pasty, or gel-like materials.

    In these methods, they used the Brookfield RVDV-II+Pro as well as the Brookfield RVDV-III Ultra and the Brookfield RVYR-1 Rheometer. These are now obsolete instruments, but one could use the DV2T and DV3T which are perfect and suitable to be used for the same applications.

    Be sure to read the application note and discover more about the viscosity profile of Sunburn Treatment Gel. Check out our website:

    Sun’s Out: Bring on the Sunburn Gel
  13. Calibrate Your ProDSS Water Quality Meter like a PRO!
    27 August 2018

    The Ultimate Guide for the YSI ProDSS instrument provides helpful insights, instructions and troubleshooting tips for calibrating your ProDSS water quality meter.

    The guide includes a Calibration Worksheet to help you track and document all your calibrations and the performance of your sensors. For accurate calibration results, be sure to follow the calibration procedures in the manual of the meter and to check that your calibration solutions are fresh.

    What You'll Find in the Guide?

    Temperature | Conductivity | pH | ORP | DO | Turbidity | Depth |

    Ammonium | Nitrate | Chloride

    You will also find instructions on how to:
    install and uninstall sensors
    clean a sensor port
    verifying sensor accuracy & calibration
    resetting a sensor to factory default

    Keep reading or download the easy printable guide to get all the tips and start calibrating your ProDSS like a pro!

    Don't have a ProDSS yet? Be sure to read our post on the 7 Things You Need to Know about the ProDSS or download the newly issued brochure with all the main highlights about the ProDSS.

    Should you need any further information about the ProDSS water quality meter, visit our website:

    Calibrate Your ProDSS Water Quality Meter like a PRO!
  14. Latest Changes in borer Chemie Range
    27 August 2018

    borer cleaning solutions have issued a product change notification regarding the Material Safety Data Sheets (MSDS) of the deconex 11 Universal & deconex 15 PF-x cleaning solutions.

    The company has made some changes in the classification and labelling of these products, due to “the continuous harmonization of the classification and labelling of substances by the European Chemicals Agency (ECHA), and the related adjustments to the classification of their raw materials.”

    These changes only affect the MSDS, and not the actual composition of the product. The changes to the MSDS are effective immediately. Below are a list of the affected parts and their new updated MSDS:

    - Deconex 11 Universal cleaner, 5kg, 4AJ-6083424 (500100.00-K05W)
    - Deconex 11 Universal cleaner, 10kg, 4AJ-6202891 (500100.00-K10W) 
    - Deconex 11 Universal cleaner, 1kg, 4AJ-6801886 (500100.00-F10W) 
    - Deconex 15 PF-x, 1 kg, 4AJ-9192892 (518000.00-F10W) 
    - Deconex 15 PF-x, 5 kg, 4AJ-9192893 (518000.00-K05W) 
    - Deconex 15 PF-x, 10 kg. 4AJ-9192894 (518000.00-K10W) 
    - Deconex 15 PF-x, 28 kg.4AJ-9192895 (518000.00-K25W) 

    Be sure to download the Deconex 15 PF-x and the Deconex 11 Universal cleaner MSDS sheets.

    Should you require any more information regarding these changes, check out our website:

    Latest Changes in borer Chemie Range
  15. Neodisher® LaboClean FLA Changes Formula
    27 August 2018

    Dr Weigert, leading company in professional systematic hygiene solutions, have announced a change in the formula of their popular special cleaner Neodisher® LaboClean FLA.

    The company has stated that the change was due to the discontinuation of a component by their supplier, which forced a slight adjustment to the formula of the detergent. 

    In a statement issued by the company, they state that "the complexing agent contained in the product was replaced by an equivalent alternative. The type of cleaning agent of the neodisher® LaboClean FLA and its characteristic features, application properties, as well as used concentration, remains unchanged. The equivalency of the formula was verified, evaluated and consequently, its conformance determined.”

    This change in the formula will be taking place from December 2018. 

    Should you like to know more about the Neodisher® LaboClean FLA formula change or how it may affect your application, visit our website:

    Neodisher® LaboClean FLA Changes Formula
  16. Pipetting: Are you Doing it Wrong?
    27 August 2018

    The experts at BioSistemika know that inconsistent pipetting can interfere with your application results and even cause experimental failure. 

    To make sure your pipetting technique is spot on, they have put together 12 simple tips you can follow to improve your pipetting technique!

    1. Pre-Wet the Pipette Tip
    Evaporation in the tip can cause sample loss before delivery, so make sure to aspirate and expel any samples at least 3 times. This increases humidity in the tip and reduces sample evaporation.

    2. Immerse Tip in the Proper Depth When Aspirating
    Too little immersion can lead to air aspiration where too much immersion can cause samples to cling to the outside of the tip. Aim for immersing the tip below the meniscus.

    3. Pause After Aspiration
    After the plunger stops the liquid in the tip might still be moving, so leaving the tip in the liquid for about one second after aspirating the sample will help keep the volume of sample correct.

    4. Keep Plunger Pressure & Speed Consistent
    The better consistency you achieve while aspirating and dispensing – applying the same force and speed – the better, more repeatable your results will be.

    5. Take the Pipette Straight out
    Always hold the pipette vertically, as holding the pipette at an angle or touching the sides of the container might alter the volume of the sample.

    6. Check the Tip Before Dispensing
    Gently remove any droplets from the outside of the tip, avoiding the tip opening, as absorbent material can draw sample out of the tip.

    7. Check the Tip After Dispensing
    Remove the tip after dispensing, while pressing the second stop of the plunger to avoid sample re-aspiration. Also, dispensing the sample with the tip touching the side of the container helps delivering any residual sample in the tip.

    8. Standard Mode Pipetting
    With aqueous samples, choose “standard” over “reverse” pipetting mode, as in reverse mode the pipette tends to deliver more than the calibrated volume.

    9. The Right Pipette
    The volume range in the pipette is everything. The closer it is to the volume of your sample, the more accurate your results will be.

    10. The Right Tip
    Make sure the tips are high quality with airtight seal to minimize pipetting force and are free of moulding defects. However, the most important thing to consider is that mismatched tips and pipettes can result in inaccuracy, imprecision, or both.

    11. Ambient Temperature Balance
    Try to reach a temperature balance between the liquid and the equipment. Working at a single, constant temperature improves overall precision, as it helps to minimise variations in air pressure, relative humidity and vapor pressure of the liquid.

    12. Keep Pipette Handling to a Minimum
    Always wear gloves when pipetting to reduce heat transfer, put it in the stand or set it on the bench when not in use and avoid handling pipette tips or containers of samples yet to be pipetted.

    Read the full article on our website:

    Pipetting: Are you Doing it Wrong?
  17. IDS Go Wireless: No more Wet Feet in the Field
    20 August 2018

    The new waterproof bonding on the IDS probes is what makes them perfect for outdoor measurements and your greatest ally in the field. According to WTW, come July 2018, the new modules will be labelled with an IP 66 rating (hose-proof).

    One of the applications where these will prove to be more helpful is groundwater pumping testing. A classical pumping test includes the measurement of pH, conductivity, dissolved oxygen (DO), and maybe Oxidation Reduction Potential (ORP). The groundwater is pumped through a flow-through vessel equipped with the appropriate sensors which are connected to the meter(s) – any of the Multiline®IDS Portable Meters will do perfectly.

    What’s the big advantage?

    Ease of use, convenience, accurate results, no cables & no wet feet! When using tethered sensors, the operator would have to wait near the measuring spot until stable results were achieved – which can be hard sometimes, depending on the weather and field conditions. 

    Now, using the IDS probes there’s no need for that! The sensors communicate with the meter, via wireless, without any problems or cable hassle. Plus, the measured values can be read in real time from a dry shelter close by or even a car.

    Download the WTW IDS probes brochure, or check out the portable meters we have available on our website:

    IDS Go Wireless: No more Wet Feet in the Field
  18. How Do You Communicate with Your Alicat Device?
    20 August 2018

    Alicat flow meters or pressure controllers output a large amount of data that can be useful in multiple ways. The most elementary way of communication would be through the LCD panel on the front of the device. Here you can choose to display different scientific parameters like: unit ID, absolute pressure, temperature, volumetric flow, mass flow, set point and gas type. 

    However more advanced communication features are also available like internet protocols, ethernet-based protocols, RS232, RS45, Modbus RTU, Modbus TCP/IP, DeviceNet, Profibus, EtherCAT, and analog signals like 4-20mA, 0-10 volt, or 0-5 volt.

    Depending on your application it is important to choose the ideal form of communication and interaction with the instrument. According to Alicat, before deciding on which protocol to use, the customer needs to be mindful of the existing set up. “For example, a small laboratory starting from scratch interested in getting the experiment up and running quickly would be best served using RS232 connected to a computer. Even more simply, they could use the six buttons on the front panel, right out of the box. However, if a large factory is integrating an Alicat into a system with potentially hundreds of other existing devices on a common network, we can usually accommodate the protocol that allows the device to integrate into the factory’s system.”

    Supported Protocols:

    RS232 is the most feature-rich way to digitally communicate with 
    your Alicat devices, (through a standard DB9 cable);

    RS485 if you need to run a line for thousands of feet.

    Internet protocols, ethernet-based protocols, Modbus RTU, Modbus TCP/IP, DeviceNet, Profibus, EtherCAT (to communicate with other equipment and/or networks);

    Analog signals like 4-20mA, 0-10 volt or 0-5 volt (to accommodate legacy systems);

    Alicat has engineered a multi-drop version of their communication language that allows up to 26 devices to talk on the same RS232 network in parallel. “By assigning each with a letter of the alphabet, the named instruments will only respond when they are addressed by their corresponding letter.” 

    Would you like to know more?

    You can read the full article from Alicat or check out the range of flow meters we have available on our website:

    How Do You Communicate with Your Alicat Device?
  19. Nucleic Acid & Protein Quantitation in the Microplate Format
    20 August 2018

    Read about Nucleic Acid and Protein quantitation in the Microplate Format from the experts at BioTek, global leader in life science instrumentation.

    The quantitation of nucleic acids and protein are conventional measurements used in basic science and clinical research. In this application note from BioTek, you will learn about different assays for total protein or nucleic acids that can be performed in microplates.

    You will also see the main differences between tube-based instrumentation and microplate readers and how they relate to the assays.

    In the paper you can read, “These assays have used either absorbance or fluorescence as a mean to measure the analyte in question. Regardless of the method employed, laboratories requiring high throughput have often adapted the described protocol to a 96- and more recently a 384-well microplate-based format. These standardized formats, in conjunction with instrumentation capable of recording measurements from them, allow for the rapid determination of large numbers of samples.”

    Read the application note in full on our website:

    Nucleic Acid & Protein Quantitation in the Microplate Format
  20. Think Possible with BioTek
    20 August 2018

    Lab Unlimited is pleased to show BioTek Instruments - global leader in life science instrumentation - as part of our product portfolio.

    BioTek adds their 50+ years expertise and know-how with a wide selection of high performance, cost-effective products ranging from Microplate Readers, Micro-Volume Plates, Microplate Washers and Microplate Imager & Reader Software. 

    Similar to Lab Unlimited, BioTek has the customer at the core of their mission, so they strive to develop fresh, original solutions that satisfy customer needs, even before the need is known.

    With systems and solutions that bring innovation and efficiency to your lab, we stand by the BioTek slogan: Think Possible. It’s the difference between leading and following.

    Check out our website for more information on the BioTek range of instrumentation we have available:

    Think Possible with BioTek
  21. How to Take Care of Your New EXO Sonde?
    20 August 2018

    Your EXO multiparameter water quality sonde is very rugged and strong-built to withstand the harshest weather conditions, however, there are some recommended practices to keep your system functioning properly for years to come.

    What about Wear and Tear?

    Severe wear on any one part of the sonde's body can lead to water intrusion which can potentially lead to costly repairs and faulty data. One of the things you can do to prevent excessive damage is using a probe and sonde protective sleeve which protects the sonde's body and bulkhead. This combined with good maintenance practices and easy handling of the sonde - so they don't get beat up too much-, will keep the body and bulkhead tube in good shape.

    Mind Your Wetmate Connectors!

    The Wetmate connectors on the top of the battery compartment and in the bulkhead, and sensors have to be properly maintained. A very costly repair, these are mostly damaged by lack of lubricant in the sensor's wetmate and usually leads to a pin being galvanic oxided off the sensor. What can you do to prevent some of the issues? Never introduce any foreign objects into a female connector and only use only Krytox grease to lubricate the mating surfaces of the connectors. 

    Be Careful with Batteries!

    When a battery leaks acid it can lead to the loss of all the electronics and sensors in your sonde. Never store batteries in the sonde for an extended period and always check your batteries before each deployment. Please note that battery life is reduced in cold water applications and is heavily dependent on sensor configuration.

    When using alkaline batteries, the estimated battery life is approximately 90 days for EXO2, and 60 days for EXO3, at 20°C with a 15-minute logging interval, with temperature/conductivity, pH/ORP, Optical DO, turbidity, and Total Algae-PC sensors installed along with a central wiper.

    Also, keep in mind that when using rechargeable nickel metal hydride (NiMH) batteries, the estimated battery life is not always the same, as they vary in manufacturer capacity and discharge curves. YSI recommends a NiMH D-cell battery with a minimum rating of 10,000 milliamp hours, fully charged each time it is used.

    Do you have any questions about maintaining your sondes?

    Check out our website:

    How to Take Care of Your New EXO Sonde?
  22. 10 Critical Facts about Carbon Monoxide
    13 August 2018

    The experts at Analox – leading company in custom gas detection solutions – have created a list of the top ten most essential facts about Carbon Monoxide (CO) that you must know.

    It is important to understand that CO is an odour & colourless gas that is found naturally in the atmosphere and that exists at around 0.2 parts per million (ppm), which is considered the safe level for humans. However, with the ever more intense industrial activity in the world, CO is reaching unsafe levels. 

    Show me the Facts!

    - At a concentration of 12,800 ppm, CO will cause someone to collapse, lose consciousness, and death is likely to occur in just one to three minutes

    - In 2015, 53 people died in the UK from accidental carbon monoxide poisoning

    - Carbon monoxide is the most common type of indoor air poisoning, in countries where they still rely on fires to heat homes and cook food

    - The most common source of human-produced CO is formed during combustion, when there is not enough oxygen available to produce carbon dioxide

    - CO gets into the bloodstream and prevents it from carrying oxygen to the cells and vital organs of the body

    - CO is known as the ‘silent killer’ because it has no taste, no smell and you can’t see it

    - Open fires, boilers and cookers all produce carbon monoxide

    - Carbon monoxide leaves the body quickly, so taking immediate action such as turning off an appliance, opening windows and leaving the area in the case of a suspected leak could save your life.

    And a Bit of Trivia

    - Cats can sense a carbon monoxide leak and are known to refuse to come into the house – this is a good, but not to be relied upon, warning sign

    - The phrase, ‘canary in a coal mine’ came about because miners used to take birds into mines to act as a warning signal for dangerous gases like carbon monoxide

    Nowadays, many companies and organisations are making a great effort to monitor and control CO levels with a carbon monoxide gas detector. Browse our blog for more information:

    10 Critical Facts about Carbon Monoxide
  23. Anglian Water Optimizes Water Treatment with THM Analyzer
    13 August 2018

    Parker Hannifin released an application note regarding how their Trihalomethane (THM) Analyzer was able to help Anglian Water - largest water company in England and Wales – to optimize their processes.

    In the paper, you can read how THM analysis can be quite costly and time consuming. It involves prepping the samples, sending them to the laboratory and waiting for the results. This approach means that the analysis data cannot be used for real time process control which can lead to harmful consequences in water safety. For companies and plants that are dealing with public water safety, such as Anglian Water, this called for a new strategy: the THM Analyzer.

    The THM Analyzer provides rapid measurement of THMs in water. It is a time and cost saving solution for a water plant or facility, as it ensures safe drinking water without tedious sample preparation, allowing the analysis to be made on-site and within 30 minutes.

    These features certainly appealed to Anglian Water when they started looking for an alternative to traditional THM analysis.

    So, as we can read in the application note, when Anglian Water decided to change its strategy regarding their water treatment and supply processes, they installed a THM Analyzer. With this new approach, the company managed to improve their sampling processes by making them more time and cost efficient.

    In the paper, you can also read what Mark Berry, Innovation Project Manager, at Anglian Water had to say regarding the The Parker THM Analyzer:

    “Using the Parker THM analyser we are now able to measure THM concentrations inhouse, and in less than 30 minutes. We are currently analysing over 20 samples a week and have found the system to be very easy to use. Aside from the potential cost-saving benefits, the much faster analysis capabilities provide scope for further improvements in operational efficiency.”

    Read the application in full and watch the video to see the THM in action on our blog:

    Anglian Water Optimizes Water Treatment with THM Analyzer
  24. Get Trihalomethane Measurements in 30 minutes
    13 August 2018

    The THM Analyzer is vital for drinking water safety and compliance. It can, in a matter of minutes, display the Trihalomethane concentration in water, thus making sure that the water is suitable and safe for drinking.

    Designed with the expertise from Water Industry end users and specialists, the Parker THM Analyzer is a cost effective approach to the monitorization of water disinfection by-products.

    Why is it SO Unique?

    The THM Analyzer performs a 30 minute analysis, without the need for tedious sample preparation, right at your plant or facility. With an integrated purge and trap gas chromatograph system, it will help to optimise water treatment, evaluate water age and ultimately improve your control over the formation of THMs.

    It also comes with a powerful software which provides better understanding and use of THM measurements and data analysis. The status panel operator interface is very intuitive and user-friendly. It displays measurement progress during an analysis cycle and then displays the measured concentration levels for individual and total THM.

    Also, Parker’s THM Analyzer is fully portable. Its rugged, light and compact design allows him to be easily moved and carried around (carrying case available).

    What's the difference between the On-line and the benchtop THM Analyzer?

    The on-line version does not require operator interaction. Once set up, regular sample analysis will occur automatically regardless of where the analyzer is installed.

    The Parker on-line THM Analyzer features a more robust enclosure to allow installation right at the process or distribution point of interest. Through SCADA interaction (Supervisory control and data acquisition) the operator can remotely, and safely, determine when and how often the analysis is performed.

    How does it Work?

    The THM analyser is quite simple to use and does not require any expensive and time consuming sample preparation or off-site analysis.
    Simply collect a sample and connect it to the analyzer sparging system. Push the start button to begin the measurement cycle and you will see the individual and total THM information displayed clearly on the touchscreen and laptop display. 

    Not only do you get access to the THM concentration information, but you will be able to view other analytical results as well. Such as measured concentration and detailed chromatography data which are automatically archived for future review. 
    You can also transfer the data to other software packages for more detailed trending analysis of THM information.

    This application note about Anglian Water and the Parker Hannifin’s fast drinking water analyzer is a great example of how the THM can help optimise water treatment.

    Does it suit my Application?

    The Trihalomethane Analyzer can be used in many places where THM water testing is key, e.g., Local Water Plants, Universities, Beverage Plants, amongst others.

    Check out our blog:

    Get Trihalomethane Measurements in 30 minutes
  25. YSI’s 8 steps to Calibrate & Measure Ammonia ISEs in the Lab
    13 August 2018

    Are you required to calibrate & measure Ammonia ISEs in the Lab? According to YSI, there are 8 easy but sensitive steps you must follow, to obtain repeatable and reliable results.

    Step #1: Connect the ammonia electrode to a meter that has a BNC input and can show ion concentration directly. Also, make sure to set up the instrument to measure ammonia.

    Step #2: Connect a temperature sensor to the instrument. This is key as effective ion concentration measuring depends greatly on temperature. The standard solutions temperature as close as possible to the expected sample.

    Step #3: Prepare the standards. Standards should bracket the expected sample range. There should be a tenfold difference in concentration between the high and low standards. Make sure standards are in date and use a minimum of two standards. You can also use a third standard if there is more than a tenfold difference. 

    Step #4: Place the electrode in the lowest concentration standard and stir at a constant rate using a stir bar and stir plate. The stirring speed should be limited to minimize loss of ammonia gas. Use the same stirring rate when calibrating and measuring samples.

    Step #5: Add your ionic strength adjustor (ISA) to the standard and start calibration. Once the ISA is added, the solution should have a pale blue colour, indication the pH.
    Allow the solution to stir for 1 minute and begin calibration. This is a delicate and time sensitive process. Ammonia in the sample will no longer be sufficient 4 minutes after ISA is added, so after this time, a fresh standard will need to be prepared.

    Step #6: Calibrate with additional standards. 
    Once the instrument has accepted the first calibration point, finish calibrating using steps #4 and #5 for the remaining calibration points. Make sure to calibrate in order of increasing concentration.
    If calibrating with less than 7 standards, you can finish calibration process after calibration using the highest concentration standard.

    Step #7: Evaluate electrode slope on the calibration record. For highest accuracy, the ammonia electrode slope should be between -53 mV/decade and -65 mV/decade. If not, recalibration is required.

    Step #8: Recalibration is KEY! The ammonia electrode should be calibrated at the beginning of each day. Verify the calibration result every 2 hours by preparing a fresh low to mid-range standard, adding ISA, and verifying the reading. 

    Read the article on our blog:

    YSI’s 8 steps to Calibrate & Measure Ammonia ISEs in the Lab

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