Testing Pool Water Free Chlorine

The first option for testing uses a liquid chemical oto orthotolidine that causes a color change to.

Testing pool water free chlorine.

Pool test kits can be more time consuming to use but they are typically more accurate than test strips. Occasionally seek a second opinion to make sure your testing is accurate. Testing the pool water is particularly important if your pool is left uncovered which exposes it to sunlight rain leaves and wind. Then multiply the chlorine estimations you get by 2.

Oto phenol kits test for chlorine and ph. You shouldn t have a free chlorine reading of 3 and a total chlorine reading of 7. If you test with a test kit and the color is clear then redo the test but use one half the amount of water. For test kits take your water sample from 12 to 18 inches below the surface after the circulation system has been on for an hour.

Dpd tests usually measure chlorine ph alkalinity stabilizer and hardness. In the test if your free chlorine reading matches your total chlorine reading your pool is not experiencing a high demand for chlorine. You subtract the amount of free chlorine from the total chlorine to get your combined chlorine level. However ideal free chlorine levels are dependent on cyanuric acid levels.

This is very important to help keep swimmers safe and keep the water in the pool clear. Local pool service providers often will test your pool water for free. The easiest way to check your chlorine levels is with test strips. Typical water tests include measurements for free and total available chlorine ph total alkalinity calcium hardness and cyanuric acid.

Dpd tests and oto phenol tests. If your pool has a salt system the salt level should also be checked. There are three methods that you can use to test for free combined and total chlorine in your pool which include chlorine test strips chlorine test kits and an electronic digital chlorine tester. Total chlorine is the amount of chlorine used or not in your water.

Test strips are the easiest way to test free chlorine but test kits are more accurate. Color wheel test kits use a powder or tablet chemical dpd n n diethyl p phenylene. While it s recommended that you test your pool water every day your pool should be fine if you only test the water every other day. Intheswimrecommends 2 0 to 3.

This will bring your pool water chlorine back up to a level where it s very effective at killing organisms and disinfecting the pool water. Here is the part where total chlorine comes into play. Add sanitizer to raise chlorine. There are two popular types of test kits that can be used for your pool.

Combined chlorine levels should not be above 0 5 parts per million and swimmers are likely to be more comfortable if the level is below 0 2 parts per million. You know that free chlorine combined chlorine total chlorine. In general the free chlorine level should remain between 1 5 and 2 5 parts per million. Methods to test free chlorine in the field in developing countries pool test kits.

0 ppm for a stabilized pool. Chlorine test strips are. Elevated chlorine should drop quickly with use and sunlight.