YSI 900 Free and Total Chlorine Colorimeter test tubes the housing features a specialized

the housing features a specialized polymerization coating that resists corrosion and abrasion

The ToxiRAE Pro uses intelligent interchangeable sensors that store their own calibration data — sensors are consumables with a finite service life

Available in durable Polyethylene and high-performance FEP materials

thanks to a cleverly integrated weight

hydrogen sulfide (H2S)

YSI 900 Free and Total Chlorine Colorimeter test tubes the housing features a specializedRugged, waterproof, single parameter colorimeter for free and total chlorine measurement in the field or lab. Includes: instrument, manual, 100 free and 100 total chlorine DPD powder packets (251414Y and 251401Y), carrying case, batteries, cleaning brush, screwdriver, (3) 10 mL cuvettes (24 mm), and (2) 5 mL cuvettes (10 mm).