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. i-Raman Pro Portable Spectrometer System BWS475-532H B&Wtek 840000522 - i-Raman® Pro

    i-Raman Pro Portable Spectrometer System BWS475-532H B&Wtek 840000522 - i-Raman® Pro
    i-Raman® Pro - Portable lab grade deep cooled Raman spectrometer system supporting long integration time (> 30 mins), with a spectral range of 65 - 3400 (cm-1). Fully integrated system with touchscreen tablet computer with BWSpec Mobile Software and USB multiplexer for external PC access, laser excitation of 785nm or 532nm exiting FC/PC port and SMA coupled detection. Software-configurable laser power. The spectrometer includes an expansion port facilitating using the probe with trigger button. DC power input with AC/DC adapter.
  2. i-Raman Pro Portable Spectrometer System BWS475-532S B&Wtek 840000523 - i-Raman® Pro

    i-Raman Pro Portable Spectrometer System BWS475-532S B&Wtek 840000523 - i-Raman® Pro
    i-Raman® Pro - Portable lab grade deep cooled Raman spectrometer system supporting long integration time (> 30 mins), with a spectral range of 65 - 4200 (cm-1). Fully integrated system with touchscreen tablet computer with BWSpec Mobile Software and USB multiplexer for external PC access, laser excitation of 785nm or 532nm exiting FC/PC port and SMA coupled detection. Software-configurable laser power. The spectrometer includes an expansion port facilitating using the probe with trigger button. DC power input with AC/DC adapter.
  3. i-Raman Pro Portable Spectrometer System BWS475-785H B&Wtek 840000486 - i-Raman® Pro

    i-Raman Pro Portable Spectrometer System BWS475-785H B&Wtek 840000486 - i-Raman® Pro
    i-Raman® Pro - Portable lab grade deep cooled Raman spectrometer system supporting long integration time (> 30 mins), with a spectral range of 65 - 2800 (cm-1). Fully integrated system with touchscreen tablet computer with BWSpec Mobile Software and USB multiplexer for external PC access, laser excitation of 785nm or 532nm exiting FC/PC port and SMA coupled detection. Software-configurable laser power. The spectrometer includes an expansion port facilitating using the probe with trigger button. DC power input with AC/DC adapter.
  4. i-Raman Pro Portable Spectrometer System BWS475-785S B&Wtek 840000485 - i-Raman® Pro

    i-Raman Pro Portable Spectrometer System BWS475-785S B&Wtek 840000485 - i-Raman® Pro
    i-Raman® Pro - Portable lab grade deep cooled Raman spectrometer system supporting long integration time (> 30 mins), with a spectral range of 65 - 3350 (cm-1). Fully integrated system with touchscreen tablet computer with BWSpec Mobile Software and USB multiplexer for external PC access, laser excitation of 785nm or 532nm exiting FC/PC port and SMA coupled detection. Software-configurable laser power. The spectrometer includes an expansion port facilitating using the probe with trigger button. DC power input with AC/DC adapter.
  5. Lab grade fiberoptic Raman probe BAC102-1064-5M B&Wtek 840000651 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-1064-5M B&Wtek 840000651 - Portable Raman Probes
    Lab grade fiberoptic Raman probe with trigger function, designed for versatility in making Raman measurements. This probe assembly with hand trigger features: 105um diameter, 0.22NA fiber for 1064 nm excitation, 200um diameter, 0.22NA for Raman pickup, optical density >6, down to 100 (cm-1), 5 m fiber length terminated in SMA905 on the spectrometer end and FC/PC on the laser end. The probe can be brought directly to the sample and make contact with either the sample or the packaging of the sample via a detachable distance regulator that ensures proper focusing while minimizing contamination to the lens material. The trigger button provides the convenience of initiating measurement from the probe head. Main Features: Adhesive sealed quartz window for non-contact sampling 5.4 mm working distance Not for immersive use Optimized Optical Design Hand Trigger for Data Acquisition High Throughput Excellent Long-term Stability Distance Regulator Different versions of the probe with varying optical lenses allow for measurements down to 65cm-1 Raman shift. The standard fiber length of 1.5m includes flexible fiber coupling, internal support and durable protective PVC jacket with standard SMA 905 (collection) and FC/PC (excitation) terminations. The standard shaft is 304SS with a flat quartz window and spot size of 85um. Custom probes can be constructed with dimensions, material and working distance to suit your application needs.
  6. Lab grade fiberoptic Raman probe BAC102-1064 B&Wtek 840000404 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-1064 B&Wtek 840000404 - Portable Raman Probes
    Lab grade fiberoptic Raman probe with trigger function, designed for versatility in making Raman measurements. This probe assembly with hand trigger features: 105um diameter, 0.22NA fiber for 1064 nm excitation, 200um diameter, 0.22NA for Raman pickup, optical density >6, down to 100 (cm-1), 1.5 m fiber length terminated in SMA905 on the spectrometer end and FC/PC on the laser end. The probe can be brought directly to the sample and make contact with either the sample or the packaging of the sample via a detachable distance regulator that ensures proper focusing while minimizing contamination to the lens material. The trigger button provides the convenience of initiating measurement from the probe head. Main Features: Adhesive sealed quartz window for non-contact sampling 5.4 mm working distance Not for immersive use Optimized Optical Design Hand Trigger for Data Acquisition High Throughput Excellent Long-term Stability Distance Regulator Different versions of the probe with varying optical lenses allow for measurements down to 65cm-1 Raman shift. The standard fiber length of 1.5m includes flexible fiber coupling, internal support and durable protective PVC jacket with standard SMA 905 (collection) and FC/PC (excitation) terminations. The standard shaft is 304SS with a flat quartz window and spot size of 85um. Custom probes can be constructed with dimensions, material and working distance to suit your application needs.
  7. Lab grade fiberoptic Raman probe BAC102-532-5M B&Wtek 840000647 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-532-5M B&Wtek 840000647 - Portable Raman Probes
    Lab grade fiberoptic Raman probe with trigger function, designed for versatility in making Raman measurements. This probe assembly with hand trigger features: 105um diameter, 0.22NA fiber for 532 nm excitation, 200um diameter, 0.22NA for Raman pickup, optical density >6, down to 150 (cm-1), 5 m fiber length terminated in SMA905 on the spectrometer end and FC/PC on the laser end. The probe can be brought directly to the sample and make contact with either the sample or the packaging of the sample via a detachable distance regulator that ensures proper focusing while minimizing contamination to the lens material. The trigger button provides the convenience of initiating measurement from the probe head. Main Features: Adhesive sealed quartz window for non-contact sampling 5.4 mm working distance Not for immersive use Optimized Optical Design Hand Trigger for Data Acquisition High Throughput Excellent Long-term Stability Distance Regulator Different versions of the probe with varying optical lenses allow for measurements down to 65cm-1 Raman shift. The standard fiber length of 1.5m includes flexible fiber coupling, internal support and durable protective PVC jacket with standard SMA 905 (collection) and FC/PC (excitation) terminations. The standard shaft is 304SS with a flat quartz window and spot size of 85um. Custom probes can be constructed with dimensions, material and working distance to suit your application needs.
  8. Lab grade fiberoptic Raman probe BAC102-532 B&Wtek 840000218 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-532 B&Wtek 840000218 - Portable Raman Probes
    Lab grade fiberoptic Raman probe with trigger function, designed for versatility in making Raman measurements. This probe assembly with hand trigger features: 105um diameter, 0.22NA fiber for 532 nm excitation, 200um diameter, 0.22NA for Raman pickup, optical density >6, down to 150 (cm-1), 1.5 m fiber length terminated in SMA905 on the spectrometer end and FC/PC on the laser end. The probe can be brought directly to the sample and make contact with either the sample or the packaging of the sample via a detachable distance regulator that ensures proper focusing while minimizing contamination to the lens material. The trigger button provides the convenience of initiating measurement from the probe head. Main Features: Adhesive sealed quartz window for non-contact sampling 5.4 mm working distance Not for immersive use Optimized Optical Design Hand Trigger for Data Acquisition High Throughput Excellent Long-term Stability Distance Regulator Different versions of the probe with varying optical lenses allow for measurements down to 65cm-1 Raman shift. The standard fiber length of 1.5m includes flexible fiber coupling, internal support and durable protective PVC jacket with standard SMA 905 (collection) and FC/PC (excitation) terminations. The standard shaft is 304SS with a flat quartz window and spot size of 85um. Custom probes can be constructed with dimensions, material and working distance to suit your application needs.
  9. Lab grade fiberoptic Raman probe BAC102-532E-5M B&Wtek 840000648 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-532E-5M B&Wtek 840000648 - Portable Raman Probes
    Lab grade fiberoptic Raman probe with trigger function, designed for versatility in making Raman measurements. This probe assembly with E-Grade upgrade for cut-on start from 65 (cm-1) and hand trigger; 105um diameter 0.22NA fiber for 532nm excitation 200um diameter 0.22NA for Raman pickup, optical density >6; 5m fiber length terminated in SMA905 on the spectrometer end and FC/PC on the laser end. The probe can be brought directly to the sample and make contact with either the sample or the packaging of the sample via a detachable distance regulator that ensures proper focusing while minimizing contamination to the lens material. The trigger button provides the convenience of initiating measurement from the probe head. Main Features: Adhesive sealed quartz window for non-contact sampling 5.4 mm working distance Not for immersive use Optimized Optical Design Hand Trigger for Data Acquisition High Throughput Excellent Long-term Stability Distance Regulator E-grade Optional Range Down to 65 cm-1 Different versions of the probe with varying optical lenses allow for measurements down to 65cm-1 Raman shift. The standard fiber length of 1.5m includes flexible fiber coupling, internal support and durable protective PVC jacket with standard SMA 905 (collection) and FC/PC (excitation) terminations. The standard shaft is 304SS with a flat quartz window and spot size of 85um. Custom probes can be constructed with dimensions, material and working distance to suit your application needs.
  10. Lab grade fiberoptic Raman probe BAC102-532E B&Wtek 840000502 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-532E B&Wtek 840000502 - Portable Raman Probes
    Lab grade fiberoptic Raman probe with trigger function, designed for versatility in making Raman measurements. This probe assembly with E-Grade upgrade for cut-on start from 65 (cm-1) and hand trigger; 105um diameter 0.22NA fiber for 532nm excitation 200um diameter 0.22NA for Raman pickup, optical density >6; 1.5m fiber length terminated in SMA905 on the spectrometer end and FC/PC on the laser end. The probe can be brought directly to the sample and make contact with either the sample or the packaging of the sample via a detachable distance regulator that ensures proper focusing while minimizing contamination to the lens material. The trigger button provides the convenience of initiating measurement from the probe head. Main Features: Adhesive sealed quartz window for non-contact sampling 5.4 mm working distance Not for immersive use Optimized Optical Design Hand Trigger for Data Acquisition High Throughput Excellent Long-term Stability Distance Regulator E-grade Optional Range Down to 65 cm-1 Different versions of the probe with varying optical lenses allow for measurements down to 65cm-1 Raman shift. The standard fiber length of 1.5m includes flexible fiber coupling, internal support and durable protective PVC jacket with standard SMA 905 (collection) and FC/PC (excitation) terminations. The standard shaft is 304SS with a flat quartz window and spot size of 85um. Custom probes can be constructed with dimensions, material and working distance to suit your application needs.