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Chelsea Technologies Group is the world's leading designer and manufacturer of sensitive, reliable and easy-to-use in-situ fluorometers. 

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UniLux: Low cost digital fluorometers to monitor Chlorophyll-a, Phycoerythrin,  Rhodamine WT, Phycocyanin, Fluoroscein or Nephelometer.

FAST^tracka  System: Comprises the FAST^tracka II FRRF, the FAST^act laboratory unit & the FAST^pro Windows-based GUI.  Ideal for use in-water or in the laboratory.

TriLux: Low cost digital fluorometers to monitor combinations of Chlorophyll-a, Phycoerythrin, Phycocyanin and Nephelometer. 

AQUA^tracka III: Compact, lightweight, submersible  fluorometers for the determination of Chlorophyll-a, dye tracing or turbidity. Rated to 6000m. 

UviLux : Small low cost, digital fluorometers to monitor in real-time concentrations of refined hydrocarbons (365nm) or crude hydrocarbons (450nm).  Rated to 600m.

UV AQUA^tracka :   Extremely sensitive UV  fluorometers for the measurement in real-time of refined hydrocarbons (360nm) or crude hydrocarbons (440nm). Rated to 6000m with optional ambient light baffling cowl for use in surface waters.