Alkalinity is a parameter that indicates the ability of water to absorb protons, and is usually calibrated by the total amount of material that can interact quantitatively with strong acids in water. Such substances include strong base, weak base, strong base and weak acid salts.

The alkalinity in natural water is mainly caused by bicarbonate (bicarbonate), carbonate and hydroxide, of which bicarbonate is the main form of alkalinity in water. The pollution sources that cause alkalinity are mainly the waste water discharged by papermaking, printing and dyeing, chemical industry, electroplating and other industries, and the loss of detergents, fertilizers and pesticides during use.

Alkalinity is also used to evaluate the buffering capacity of water bodies and the solubility and toxicity of metals in them. More commonly used in engineering is the definition of total alkalinity, which is generally represented as a concentration equivalent to calcium carbonate. The alkalinity of the water treatment process can be monitored with a laboratory titrator, or a digital titrator, and of course, the water quality online monitor (the instrument is to observe the water quality indicators through real-time monitoring).

How to Monitor the Hardness of Water?

The TOH-8000 online water quality alkalinity analyzer adopts continuous flow analysis technology to complete the colorimetric analysis of samples. The absorbance value of the mixture of the sample and the alkalinity indicator is measured everywhere at a specific wavelength, and the alkalinity value of the actual water sample is calculated by comparing with the material with the standard known alkalinity. It is used to measure the total alkalinity of industrial boiler water, circulating water and drinking water.