3-Way Test Kit with Polyethylene Case makes testing Chlorine, Bromine and pH levels easy. First use the color-coded vials to take samples of your pool water. Compare your results to the easy-to-identify color-coded test blocks. Customers prefer this product because it comes with a sturdy polyethylene case and easy-to-read instructions.
Download instructions here: https://www.valterra.com/downloads/download-info/3-way-oto-test-kit-instructions-englishspanish-b7226c-b7228/