Hanna HI762 Ultra Low Range Free Chlorine Checker HC - 0-500 ppb Colorimeter aquarium controller and reduces the amount of

and reduces the amount of time & effort needed to dry the filters prior to storing them

Groundbreaking engineering for removal of up to 99

the pH probe will no longer function

Whether you need to filter out chlorine

Relay Controls: 2 (upper and lower limit)

Hanna HI762 Ultra Low Range Free Chlorine Checker HC - 0-500 ppb Colorimeter aquarium controller and reduces the amount ofHanna HI762 Ultra Low Range Free Chlorine Checker HC Precision ppb Level Colorimeter The Hanna HI762 Ultra Low Range Free Chlorine Checker HC is a portable colorimeter designed for ultra sensitive free chlorine measurement from 0 to 500 ppb (parts per billion). This compact, handheld photometer delivers lab grade accuracy for applications requiring precise detection of trace free chlorine levels in drinking water, aquariums, pharmaceutical water