Keep minerals in solution: Hard water minerals stay dissolved and flow through your plumbing harmlessly

Simply open and add to the cap of your electrode or tester

Monitor pH in chemical processes

Aluminum and asbestos

Milwaukee MI404 Free & Total Chlorine PRO Photometer alkaline glass bottle Keep minerals in solution: HardAB GRADE, EASY TO USE, HIGH PERFORMANCE. Milwaukee MI404 PRO Photometer is for users demanding fast, reliable, repeatable results with ease of use. DESCRIPTION The Milwaukee MI404 PRO Photometer features manual zero point calibration and fast operation in a rugged design. The Milwaukee PRO Photometer is ideal for users in pools, brewing, winemaking, and hydroponic applications. This meter is also ideal for educators that want their students to learn