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YSI
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Lab Supplies
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Water Testing Equipment and MetersView all
Calibration Solutions 
Colorimeters pHotoFlex Series colorimeters suitable for use with over 138 reagents to measure the absorbance of particular wavelengths of lights. Feature an easy-to-read LCD display and data storage capacity up to 1000 sets
Dissolved Oxygen Meters RoHS-certified digital meters designed to measure the dissolved oxygen content and biochemical oxygen demand in water-quality testing jobs. Feature a One Touch Cal option to calibrate the device within three seconds and an internal barometer to attain the highest accuracy
Electrodes and Probes Includes replacement electrodes, like ammonium sensors, ISE / BOD probes, cables with ODO probes, chloride sensors, conductivity cells and pH probes, ideal for testing water quality
Multi-Parameter Meters Handheld multiparameter meters and water-quality meter kits designed to measure pH levels (-2.6 to 16.6), ion concentration and fluid conductivity. Feature a storage capacity of up to 5000 data sets and USB connectivity on selected models
ORP Meters CE-compliant pen-style meters ideal for testing the oxidation-reduction potential in wastewater treatment & food processing industries. Feature a hold button to lock the readings (absolute & relative) and provide more than 200 hour battery life
pH Meters Waterproof meters used for measuring temperature, pH levels and ORP (redox potential). Come equipped with an IP-67 rated impact-resistant case. Replacement flat-glass pH electrodes also available
Reagents and Refills 
Water Quality Testing Kits Water Testing Meter Accessories Includes adapters, barcode scanners, battery packs, belt clips, BOD chambers & cables, suitable for use with YSI water testing meters
About Ysi
YSI is a part of Xylem Analytics which provides ISO 14001 and ISO 13485 certified water management solutions to modern environment monitoring laboratories. Owing to the company's vast experience in water management industry, it offers a broad range of products, including dissolved oxygen meters, multiparameter meters, conductivity meters, pH meters, water level testers and colorimeters. YSI multiparameter water quality meter and colorimeter feature PC connectivity to backup data through the LSdata software. YSI conductivity meters, available in 0-9999 uS/cm electric conductivity range, are used in laboratories to measure the electrical conductivity of aqueous solutions.
