Corrosion
Limit values: Free chlorine < 0.5 ppm, chlorine ions < 200 ppm, sulfate < 100 ppm, ammonia < 10 ppm, free CO < 10 ppm, pH value 7 – 9.
The following ions do not corrode under normal conditions: phosphate, nitrate, nitrite, iron, manganese, sodium, and potassium.
