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Measuring pH in shampoo

Published 18. December 2015

Shampoo is a hair care product used for removal of dirt, dandruff, skin particles, oils and other contaminated particles.

As the scientists behind hair care progressed, manufacturers synthesized chemical additives for use in shampoo as fragrance, foaming agents, and colored dyes. Shampoo is now created and structured towards various hair types, as well as to achieve a certain end result, such as the reduction of dandruff or greasy hair. Both the synthetic and natural ingredients used in a shampoo dictate the pH of that particular product. The pH of a shampoo will alter the natural pH of skin and hair, which ideally falls between pH 3 and 5 and pH 4 and 5, respectively, thereby affecting their physical and chemical makeup.





HANNA Instruments offers pool contractors, CPO’s and homeowners a variety of water testing equipment. Hanna offers testers, photometers, chemical test kits, controllers, monitors and free and total chlorine analyzers.

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What shoud the pH of your pool be?


The pH of a pool should be around 7,4. pH has a tendency to move up in a pool, due to dirt, sweat, lotion, urine, etc. Higher pH means less effective chlorine. You can usually lower the pH by adding muriatic acid.

What should the TDS value of your pool be?


The TDS of a pool doesn’t really have an official recommended value. For regular chlorine pools, most pool operators will try to keep the TDS around 1500 ppm (1.5 ppt). For a pool that has a salt-chlorine generator, the TDS value will depend on the manufacturer of the generator; it’s usually around 3500 ppm (3,5 ppt).



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