4-Way Pool Test Kit

A liquid pool kit for sanitizer, pH, total alkalinity and acid-demand testing.

See more of the water balance

The 4-Way Pool Test Kit combines a sanitizer check with pH, total alkalinity and acid-demand testing. Its chlorine and bromine scales are alternatives for different sanitizer systems. Read the one that matches your water treatment. The additional balance tests are useful when a pH reading shows a problem but does not explain how strongly the water will resist a correction. They give you more information before you choose an adjustment.

pH and alkalinity do different jobs

pH describes how acidic or basic the water is at the time of the test. Total alkalinity describes its capacity to neutralize acid and resist pH change. A pool can have a pH reading that looks acceptable while its buffering capacity needs attention. Testing alkalinity helps explain why pH may move easily or prove difficult to adjust. Treat the two results as related measurements rather than interchangeable names for the same thing.

What acid demand adds

An acid-demand test helps determine how much acid treatment is needed to bring a high pH down toward the intended level. It tests the response of a measured water sample rather than asking you to guess from the pH number alone. The result must be interpreted with this kit's directions and the pool volume. It is a planning test for a pH correction, not a separate sanitizer test or a signal to add acid automatically.

Know the sanitizer method

The OTO sanitizer test develops a yellow color for comparison with the sanitizer scale. Follow the kit instructions for the testing sequence and the point at which to read that color. Choose the chlorine scale for a chlorine pool or the bromine scale for bromine-treated water. Those scales represent different treatment systems. pH remains a separate concern because it affects chlorine performance even when the sanitizer color appears to fall within a familiar range.

Turn measurements into a controlled routine

Use the exact sample volumes and testing sequence supplied with the 00-486 kit. Record the results together, then choose the adjustment appropriate to the reading that needs attention. Correct interpretation requires knowing the pool's volume as well as the test result. Use the treatment label and the kit's own tables for any chemical amount. Testing again after the prescribed adjustment process shows the water's response instead of assuming the first addition achieved the intended balance.