BS EN ISO 10523:2012

This standard BS EN ISO 10523:2012 Water quality. Determination of pH is classified in these ICS categories:

• 13.060.50 Examination of water for chemical substances

This International Standard specifies a method for determining the pH value in rain, drinking and mineral waters, bathing waters, surface and ground waters, as well as municipal and industrial waste waters, and liquid sludge, within the range pH 2 to pH 12 with an ionic strength below I = 0,3 mol/kg (conductivity: γ_{25 °C} < 2 000 mS/m) solvent and in the temperature range 0 °C to 50 °C.