Speaking of tap water, it is one of the sources of water directly for people to drink. If it is polluted, the consequences can be imagined! So why is it important to monitor E. coli numbers?

Because once the tap water is contaminated by bacteria, it is possible to cause intestinal infectious diseases, even epidemics (such as typhoid fever, bacillary dysentery, etc.). All tap water must be strictly monitored to ensure the safety of drinking water! And intestinal pathogens are easy to die or mutate in water, so the number is small, and it is difficult to check, and the current broad indicator is E. coli. If there is no E. coli in the water or if the amount is small, this can indicate that the water is not contaminated with pathogenic bacteria.

In fact, the general water quality parameter determination method basically belongs to the physical and chemical inspection, according to the customer’s own requirements to choose which monitoring method of water quality monitor. The WECT-900 water Escherichia coli online analyzer produced by Modi adopts the international standard method, and the principle that the light signal change after the reaction of enzyme and bacteria culture is proportional to the change, reflecting the total amount of bacteria or coliform bacteria in the sample. Its working principle is E. coli test technology is a biosensing technology based on E. coli detection system, it provides an effective response to water supply contamination detection means. The number of E. coli in water samples can be expressed by comparing the degree of light intensity weakening of the solution with that of a non-toxic control blank experiment.

Of course, the indicators of tap water monitoring are not only E. coli, but also total residual chlorine, heavy metals and other parameters. There are also certain differences in the water quality monitors involved. If you want to know more about water quality monitoring instruments, you can pay attention to Hangzhou Modi.