Test Kits: Basic PH and Chlorine Test Kit comes with round clear-view test block with color matching caps to solutions. Built-in color readings on front and back. 4-1 Test Kit with OTO tests for chlorine/bromine, ph, acid demand, total alkalinity. Professional grade Test Kit 4-in-1 with OTO solution. These quality kits are the very ones that Pool Guy Supply service technicians use everyday out in the field. For ease and accuracy in testing pool or spa water. Refills and dropper bottles are also available. 4-1 Test Kit with DPD1 Pills allows you to test for chlorine/bromine with pre-measured pills that can be dropped into the test vial to get an accurate reading. This test kit also tests for ph, acid demand, and total alkalinity. Just need the dropper refills? Check out our Test Kit Refills page now!
