1, water molecular formula H2O, the relative molecular weight of 18.015, in the water molecules, hydrogen accounted for 11.9%, oxygen accounted for 88.81%.
2, the salinity of water: also into the degree of mineralization, is that the amount of salt in the water can also be expressed as a variety of water in the water, cationic and.
3, hardness: water cation with anion combined to form the scale after the total concentration of metal ions.
4, conductance and resistance: the more pure water, the less salt, the greater the resistivity, the smaller the conductivity. Ultra pure water is almost no electricity. The size of the conductance is equal to the reciprocal of the resistance value.
5, PH value and pH: water PH value is that the concentration of hydrogen ions in water, the negative logarithm, also known as hydrogen ion index. It can be seen that the aqueous solution is alkaline, neutral and acidic.
6, high-quality water: the basis of municipal water supply (or standard water) using coarse filter, fine filter, ultrafiltration, sterilization and other processes. Deep processing of high-quality drinking water.
7, mineral water: the precious water resources in nature, after sterilization filter simple treatment, as a commodity drinking water supply to the vast number of consumers.
8, pure water: the use of high desalination rate of water treatment equipment and almost no impurities in the clean water, the conductivity is generally 1.0 ~ 0.1μS / cm.
9, mineralized water: in the more pure raw water using a special process, adding ore rock to get the trace elements containing pure mineralized water.
10, softened water: refers to the water hardness (mainly refers to the water calcium, magnesium ions) to remove or reduce a certain degree of water. Water in the softening process, only the hardness decreased, while the total salt content unchanged.