Test your pool or spa water to check levels for total chlorine, bromine, and pH, and ensure that your water is balanced and well maintained at all times, with the Taylor Basic Residential OT Pool & Spa Test Kit. The Taylor Basic Residential OT Pool & Spa Test Kit comes with a dosage chart that lets you determine the exact quantity of chemicals you need to add to your pool or spa so you never have to guess how much you need. The Taylor Basic Residential OT Pool & Spa Test Kit provides accurate results instantly and is simple to use. Just take water samples and add the reagent to it, then see the results on the easy-to-read comparator. The Test Kit comes in a hard shell case with color-coded instructions so it is very easy to read the test results.