The rugged design withstands pool-side conditions

Quad-function probe measures EC

Extended range (-2

Low battery warning

which is NOT the same as NPT (National Pipe Thread)

Milwaukee MI511-100 Free & Total Chlorine & pH Reagent Kit | 100 Tests for MI411 lab grade electrode The rugged design withstands pool-sideMilwaukee MI511 100 Free & Total Chlorine & pH Reagent Kit (100 Tests) Get complete pool and water quality chemistry in a single kit with the Milwaukee MI511 100 100 pre made liquid reagent tests covering Free Chlorine, Total Chlorine, and pH, all formulated specifically for the Milwaukee MI411 Free & Total Chlorine & pH Photometer. Two proven colorimetric methods in one kit: the industry standard DPD method for free and total chlorine measurement (0.