ORP

The oxidizing or reducing capacity of water. This is an indication for the presence of desinfactants in the water. + 200 mV to + 600 mV + 600 mV to 1000 mV or 0 mV to 200 mV > 1000 mV or < 0 mV

Temperature

If the temperature is too high, the quality of water can decrease faster. 0 – 25 °C 25°C – 28°C or a variation of 20% within the hour. > 28 °C

Conductivity

The amount of dissolved salts and minerals. < 900 µS/cm 900 – 2100 µS/cm or a variation of 20% within the hour. > 2100 µS/cm

pH

Acidity of the water 7,8 – 8,3 7 – 9,5 or a variation of 20% within the hour. < 7 of > 9,5

Turbidity

An indicator for the presence of sand, sediment or living organisms. < 0,2 NTU 0,2 to 0,8 NTU or a variation of 20% within the hour. > 0,8 NTU