Speaking of total residual chlorine, it refers to the chlorine oxidizer added to the water for a period of time, removed by the water microorganisms, organic matter and other consumption, the remaining is the total residual chlorine content, including floating ion residual chlorine and combined residual chlorine. So what is a reasonable amount of total residual chlorine in water? How do we know it makes sense? This chapter water quality online monitoring instrument manufacturers to understand this problem with you!

What is the Reasonable Amount of Total Residual Chlorine?

China’s standard for residual chlorine content is: the free residual chlorine of the factory water should not be lower than 0.3mg/L after 30 minutes of contact, and should not be lower than 0.05mg/L at the end of the pipe network. In other words, if we do not purify the tap water, then the drinking water we drink every day contains a maximum of 0.05MG/L of residual chlorine.

Once the total residual chlorine in water exceeds the standard, it has an impact on human health. Drinking tap water with high chlorine content for a long time will have cancer risk. Bathing can also increase symptoms such as itchy skin.

So How do We Know That the Total Residual Chlorine in the Water Exceeds the Limit?

The total residual chlorine in water can be monitored in real time by the RCl900 total residual chlorine online analyzer. The monitoring process is as follows: after the water sample and anti-interference agent are automatically injected into the reactor, the characteristic color developer is automatically added for color reaction, and the absorbance of the reactants is measured; The online analyzer can directly measure the total residual chlorine content in water through the absorbance value.

Therefore, do not think that drinking water will be safe after disinfection with disinfectants, but also consider whether the residual chlorine in the water after using disinfectants exceeds the standard, so as not to bring unnecessary harm!