Pool Water Testing

Pool Water Testing
December 08/2015

How To Test Your Swimming Pool Water
In order to select the right chemicals for your swimming pool, you must either use a swimming pool water test kit or take a water sample to your local pool professional for analysis. This will give you an accurate measurement of your swimming pool’s pH, alkalinity, free chlorine, free bromine, stabilizer, and calcium hardness that determine the overall health of your pool. With these results, you can add the necessary chemicals to correct any imbalances that can cause milky, cloudy, or green swimming pool water.

Swimming pool test strips are very easy to use
Each test strip has several areas that react with the presence of a particular parameter of water chemistry. To test your swimming pool water, simply dip the testing strip into the swimming pool water and immediately pull it out without shaking off the excess water. Hold the test strip horizontally and compare it to the color chart provided with the kit, (which is usually on the bottle itself). This will give you fast, accurate results that will allow you to select the right products needed to balance your water.

Liquid swimming pool testing kits
Liquid swimming pool testing kits are another effective way to test your swimming pool water chemistry. Instead of a strip you dip into the water and read, these kits require you take a small water sample and fill a supplied graduated cylinder. Then you simply add a few liquid testing reagents and wait for the color changes to take place. Match the color of the water to the supplied color chart, allowing you to determine what products you need to add to your water.

Choosing which type of swimming pool testing kit to use is largely personal preference. They are both accurate and take about the same amount of time to get results. However, liquid testing kits are considered to be the most precise and are usually available with the most number of tests in one kit.

Ideal Swimming Pool Water Parameters
To ensure swimmers comfort and to ensure that your products work at their peak performance levels, you must keep your swimming pool chemicals within the following ranges:
  • pH Level  7.2 to 7.6
  • Alkalinity 80 to 120 ppm
  • Calcium Hardness  250 to 300 ppm
  • Total Dissolved Solids (TDS) (Non salt Pools) 0 to 1500 ppm
  • Cyanuric Acid (Chlorine Stabilizer)  30 to 50 ppm
  • Total Bromine  3 to 5 ppm
  • Free Chlorine   1.5 to 3.0 ppm
  • Combined Chlorine less than 0.2 ppm

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