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Frequently Asked Questions

What does the pH value mean?

The name "pH" may be the abbreviation of "pondus hydrogenii". Literally this means "quantity of hydrogen". The pH therefore is an indication of the number of hydrogen protons.

‘Water is made up of H+ protons and OH- ions, which translates into a scale of 0 to 14. For pure water, there are as many H+ as OH- ions present, which indicates a neutral value. When there are more H+ protons, then the pH value is below 7, and we refer to this as acidic. An overweight of OH- ions, with a pH value below 7, indicates an alkaline solution.

The basis of a clean, sterile and clear swimming pool free of foul odours and without any risk to health begins with the right pH value. This value should be between 6.8 and 7.8. The exact pH value depends on the situation.

There is no unit of measurement for expressing pH!

Good quality pool water depends to a large degree on the right pH value. The pH value is a measurement that provides information about the acid or alkaline reaction of the water. At a pH value of 7, the water is neutral.

A higher pH value may cause red eyes and skin irritation (and not the chlorine concentration, as is often mistakenly assumed), and the effect of the chlorination is reduced, leading to greater levels of limescale deposition. At low pH values, the same symptoms arise, and metal parts are subject to corrosion too.

Continual checking of the pH value and correction where necessary are therefore extremely important.

If you require further information, then contact our Starline sales team.

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