Description

The Swimline Hydrotools 8440 is a four in one test kit for pool water. It covers chlorine, bromide, pH, alkalinity and acid demand, which is the short list most owners need to keep the water safe and comfortable.

What you get

The kit arrives with its reagents and a heavy duty storage case. The case matters more than it sounds: reagent bottles that live loose in a pump room get knocked over, and a kit that stays together is a kit that actually gets used.

Reading the results

Chlorine and bromide show sanitizer level, pH and alkalinity show whether the water is stable, and the acid demand reading tells you how much acid the water needs rather than leaving you to estimate. Run the tests on a regular schedule and correct in small steps.