Hach 2105560 SwifTest Free Chlorine refill cartridge is used with the Hach SwifTest dispenser. Each vial contains enough free chlorine reagent for approximately 250 tests, 10 ml sample size.
Each click dispenses exactly the correct amount of reagent for a 10 ml free chlorine test. Can be used with Hach Pocket Colorimeters and Hach DR890 and DR900 Colorimeters.