AquaChek Mach 7-in-1 Test Strips Clear Water If you don't see your

If you don't see your Hayward sand filter listed above

Features & Benefits

it automatically floats on top of the pool's surface and forms an invisible

Silent Mode - for quiet and efficient operation

Software Updates: Via USB and push updates to comes

AquaChek Mach 7-in-1 Test Strips Clear Water If you don't see your7 in 1 Test Strips Tests for: Free Chlorine, Total Chlorine, pH, Total Alkalinity, Stabilizer (Cyanuric Acid), Total Hardness, and Total Bromine. Mach 7 in 1 is designed for customers who use chlorine in their pool or spa: the go to product for testing the most critical parameters in your pool. You'll find the easy to use flip top cap conveniently dispenses one strip at a time. AquaChek Mach is a great choice when getting started with pool testing.