Phosphate Test Kit, Pool 50 Counts Strips for Hot Tub and Swimming Pool, Quick & Reliable Water Testing with Colorimetric Tube

50 Phosphate Test Strips: Provides multiple tests to monitor water quality over time. Helps identify phosphate levels for better pool maintenance Easy to Use: 1.Add 5ml water sample into colorimetric tube 2.Put the strip into the colorimetric tube, close the cover tightly and turn upside down twice for 10 seconds. 3.Wait for 2 minute and then take out the test strip. 4.Follow the instructions to compare the color chart Observe the Color: Putting the tube bottom in the blank area of the color chart and looking down through the tube, and then compare the result with the color chart (read within 30 seconds) Phosphate Test Kit Pool : Instantly monitor phosphate levels in pool water, spa and hot tub Reliable Phosphate Test Kit: Our phosphate testing kits feature high quality materials and developed by experts, ensure the precision of your test results