How To Test Phosphates In A Pool
Items needed to test phosphates in a pool:
Test the pH and adjust to 6.8 - 7.2 before performing any other water tests. If the pH isn't within range, all the water tests will be inaccurate.
1) Make sure the sample tube is clean and dry.
2) Take a sample of water from about 18" below the surface and away from return jets and skimmers.
3) Fill the test tube to the 10 mL line.
4) Remove a test strip and gently bend it in half with the test pads facing toward each other.
5) Place the strip inside the test tube cap with the end extending down into the tube.
6) Cap the test tube with the strip and slowly invert the test tube 5 times, allowing the bubble to go from one end to the other.
7) Remove the cap with the test strip.
8) Place the color chart on a flat surface.
9) Place the open test tube on the white area of the color chart and look down through the length of the open test tube.
10) Read the results and record.
Tips: Make sure the cap on the vial with the test strips is kept tightly closed once a test strip is removed - don't leave it open. Store test kits away from direct sunlight, extreme heat, and extreme cold. ECOsmarte recommends replacing test kits every year to ensure accuracy.