LaMotte WaterLink 3-Way Chlorine/Bromine/pH/Alkalinity Spin Disk, 50 Pack, 4335-H

LaMotte 4335-H is a WaterLink spin disk that reads chlorine, bromine, pH and alkalinity from a single water sample, sold 50 to a pack.

Why alkalinity belongs in the same test

Total alkalinity is the buffer that keeps pH where you put it. Testing pH without it tells you the number but not why the number keeps moving, which is how a pool ends up being dosed over and over for the same problem. Having both on one disk means every sample gives you the whole picture.

How the disk works

The reagents are sealed into the disk at the factory. The sample fills the disk, the analyzer spins it, and each chamber develops and reads on its own. No drops to count, no color block to judge.

Picking the right part number

LaMotte splits the spin range by which tests a disk carries. This is 4335-H. The 4334-H disk is the same idea without alkalinity.