What is the difference between chlorides, chloride ions, and residual chlorine?
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What are the differences between chlorides, chloride ions, and residual chlorine? What are the main methods for measuring these three substances?:) Let’s discuss it together
Chlorides refer to a general term for compounds composed of chloride ions and other ions； Chloride ions are simply individual chloride ions. Residual chlorine can be divided into combined residual chlorine (referring to compounds of chlorine and ammonia in water, including NH2Cl, NHCl2, and NHCl3; among these, NHCl2 is the most stable and provides better disinfection effects), also known as bound residual chlorine ； Free residual chlorine (referring to OC1+, HOCl, Cl2, etc. in water; it has a fast sterilization speed and strong bactericidal power, but disappears quickly), also known as free residual chlorine ； Total residual chlorine is the sum of combined residual chlorine and free residual chlorine. For chloride ions, we use potassium chromate as an indicator and silver nitrate for titration; residual chlorine is measured directly using instruments.
Learn* it a bit. What equipment is used to measure residual chlorine?
Lianhua Technology’s CLO3H, a newly released instrument. We use Lianhua Technology’s analyzers for most of our purposes; they come with built-in curves, and we also need to purchase Lianhua’s specialized reagents, making them user-friendly instruments.