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Current position: the meaning of ppm in water quality detection
The meaning of ppm in water quality detection
Date of issue: September 12, 2017 13:44:19 source: our website editor: China government procurement website |
Ppm is the abbreviation of parts per million, which means parts per million, or parts per million. It is often used to express gas concentration or solution concentration. For example, 1 ppm, i.e., 1 million kg of solution contains 1 kg of solute. Ppm is the same as percentage (%), but its proportion is larger than percentage. In the swimming pool water quality detection, PPM will not be used to represent the concentration. For example, the concentration of residual chlorine in water is very small, only a few milligrams or even less per kiloliter of capacity, so it is expressed in ppm.
In short, it can be expressed by a formula, 1ppm = 1kg / 1000000kg = 1mg / kg = 1mg / L
The range of residual chlorine in swimming pool is generally 0.3-0.5mg/l, which can also be expressed by 0.3-0.5ppm.
Ppm of water quality is to measure water quality, some items use ppm to express the concentration of the substance. Key words: water quality detection ppm |
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