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. Lab grade fiberoptic Raman probe BAC102-785-5M B&Wtek 840000649 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-785-5M B&Wtek 840000649 - 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 785 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.
  2. Lab grade fiberoptic Raman probe BAC102-785 B&Wtek 840000217 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-785 B&Wtek 840000217 - 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 785 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.
  3. Lab grade fiberoptic Raman probe BAC102-785E-5M B&Wtek 840000650 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-785E-5M B&Wtek 840000650 - 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 785nm 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.
  4. Lab grade fiberoptic Raman probe BAC102-785E B&Wtek 840000501 - Portable Raman Probes

    Lab grade fiberoptic Raman probe BAC102-785E B&Wtek 840000501 - 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 785nm 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.
  5. LAN Cable TID-TCP B&Wtek 840000420 - NanoRam Accessories

    LAN Cable TID-TCP B&Wtek 840000420 - NanoRam Accessories
    LAN Cable.
  6. Leather Shoulder Bag For NanoRam Unit NR2-SBG B&Wtek 840000355 - NanoRam Accessories

    Leather Shoulder Bag For NanoRam Unit NR2-SBG B&Wtek 840000355 - NanoRam Accessories
    Leather shoulder bag for NanoRam unit including one NR2-PCH-ADPT (BW-840000354) pouch for holding accessories.
  7. Liquid Sample Cuvette Holder BCR100A-12mm B&Wtek 810000542 - Other Portable Raman Accessories

    Liquid Sample Cuvette Holder BCR100A-12mm B&Wtek 810000542 - Other Portable Raman Accessories
    Liquid Sample Cuvette Holder for use with the RIS100 series 12mm diameter shaft. (probe not included); and with any standard 12.5mm x 12.5mm (OD) (1cm path length) size cuvette for liquid or powder sampling. Measures Raman spectrum of liquids and powders by connecting a Raman probe directly to the holder. With a signal up to 3 times clearer than standard cuvette holders, due to internal mirror with a three point precision locking mechanism for unmatched reproducibility. Also features a stop to prevent the probe shaft from hitting the cuvette and an excitation light trap to reduce background fluorescence.
  8. Liquid Sample Cuvette Holder BCR100A-9.5mm B&Wtek 810000389 - Other Portable Raman Accessories

    Liquid Sample Cuvette Holder BCR100A-9.5mm B&Wtek 810000389 - Other Portable Raman Accessories
    Liquid Sample Cuvette Holder for use with BAC100 or BAC102 Lab Grade Raman Probe (shaft diameter of 9.5mm) or with immersion shaft (probes not included); and with any standard 12.5mm x 12.5mm (OD) (1cm path length) size cuvette for liquid or powder sampling. Measures Raman spectrum of liquids and powders by connecting a Raman probe directly to the holder. With a signal up to 3 times clearer than standard cuvette holders, due to internal mirror with a three point precision locking mechanism for unmatched reproducibility. Also features a stop to prevent the probe shaft from hitting the cuvette and an excitation light trap to reduce background fluorescence.
  9. Liquid vial holder adaptor, 15mm vials NR2-LVH B&Wtek 840000344 - NanoRam Accessories

    Liquid vial holder adaptor, 15mm vials NR2-LVH B&Wtek 840000344 - NanoRam Accessories
    The NR-LVH is a liquid vial holder adaptor for the NanoRam handheld Raman spectrometer. It allows for in situ measurements of liquids and powders, in either a 8mm or 15mm vial.
  10. Liquid Vial Holder Adaptor For 15mm Vial TID-LVH B&Wtek 840000406 - NanoRam Accessories

    Liquid Vial Holder Adaptor For 15mm Vial TID-LVH B&Wtek 840000406 - NanoRam Accessories
    Liquid vial holder adaptor, compatible with 15mm-diameter vials. It allows for in situ measurements of liquids and powders.