YSI 900 Free and Total Chlorine Colorimeter test tubes thanks to a cleverly integrated

thanks to a cleverly integrated weight

Used with: YSI 3200

the required Geotech Variable Frequency Drive (VFD) will allow you to precisely adjust the Redi-Flo2® pump's discharge flow rate with a simple turn of a knob

KCl electrolyte

User-replaceable pH

YSI 900 Free and Total Chlorine Colorimeter test tubes thanks to a cleverly integratedRugged, 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).