All solutions, and that includes water as well, can be basic, neutral, or acidic on the pH (power of Hydrogen) scale. The pH values range from 0 to 14, with acidic solutions being at the lower end of the spectrum, while basic solutions are considered those with a pH value above 7, which is a neutral value. In fact, water with a pH level of 7 is considered neutral. How are pH levels is water tested? There are three easy ways to test the pH levels in water:
Using pH papers
You can purchase these colour-coded pH papers for water testing online. These pH papers are easy to use: just fill a container with test water, dip the paper in water deep enough to cover the test strip. Within a few seconds the test strip will change into a colour that will reveal the pH level of the test water. Compare the colour revealed by pH paper with the colour chart provided with it.
Using litmus paper
Litmus paper is similar to pH paper, but unlike pH paper, litmus paper only determines whether a solution is basic or acidic. Fill a container with test water and dip the litmus paper in water. Litmus paper is either blue or red. Red litmus paper will turn blue if dipped in a basic solution, while blue litmus paper will turn red if dipped in an acidic solution. Given that litmus paper has limited capabilities in determining pH levels, a blue or red litmus paper will not change its colour if dipped in pH neutral water.
Using a pH meter
Digital pH meters are one of the fastest and most precise ways of testing the pH of water. pH meters like the Pure-Pro PH Water Tester are water-proof, are fitted with an LCD screen for digital readout, and work with batteries.
Before using the pH meter, it’s recommended that you test it in a solution with a known pH and calibrate the pH meter according to the instructions of the manufacturer. Whether you need a pH meter to test the pH level of your tap water, pond or aquarium water, you can rely on a pH water tester to deliver precise results.
Water pH testing can be important in reverse osmosis systems as well, which are known to produce slightly acidic water if they are not fitted with an alkaline filter, therefore, a pH tester can come in handy to test the pH level of filtered water produced by your water filter system to see if you need to use an alkaline filter to tackle acidity problems in your water, and produce healthy alkaline water.