As a key artificially added regulatory indicator in tap water quality standards, residual chlorine has always occupied a core position of "needing to exist and requiring quantity control" — insufficient content will lead to loss of bacteri···

Chlorine (Cl₂) is a yellowish-green gas with a pungent odor, and it is also suffocating and highly corrosive. At 1 atmospheric pressure, chlorine liquefies into a yellowish-green transparent liquid when the temperature drops to -34.5℃, wh···

Turbidity, defined as the cloudiness of water, is an optical indicator that measures the reduction in water transparency caused by insoluble substances. These substances include solid particles (such as sediment, humus, and planktonic algae···

Currently, more than 80% of water plants worldwide still adopt chlorination disinfection, and municipal tap water in China is no exception. As required by the Standards for Drinking Water Quality (GB 5749-2006), a certain amount of residual···

As a common disinfectant component in tap water, swimming pool water and other types of water, residual chlorine can effectively kill pathogens and ensure water safety at a reasonable concentration, serving as an important barrier for maint···

Water quality is not something invisible or intangible. With the help of portable pH meters, portable dissolved oxygen meters, portable COD meters, portable ammonia nitrogen meters, portable heavy metal detectors and other devices, every in···