General description The 100 Pcs PH Pool Tester Paper is a versatile 3-in-1 test strip designed for testing free chlorine, total alkalinity, and pH levels in pool and spa water. These strips provide accurate and reliable instant readings, ensuring that your water chemistry is balanced for a safe swimming experience. Technical specifications Dimensions: 9.5 x 3.5 x 3.5 cm (approx.) Material: High-quality imported filter paper Color indications: 6 color indicators for accurate readings Usage Dip the test strip into the water for 2 seconds. Allow the strip to stand in the air for about 15 seconds. Match the color of the strip to the chart on the back of the bottle for results. Results can be read in just 17 seconds. Other information