WaterWorks™ Chloride Check 0-500ppm (Bottle of 50 tests)

Great to be able to check Chloride as it's a by product of Nitrate removal resin and not sure if it's harmful to my Rams as they died! So changing water. The colour chart is hard to read the dark to lighter (Purple) colour change but works a treat to see when it's done to 0.

Bought for my dad who keeps fish. He needs to check the water purity often. He said he likes it