What is the function of the UV light of the RO process machine above

Its function in an RO (Reverse Osmosis) process machine is to provide a final stage of disinfection for the purified water.

Here's how it works:

• Germicidal Action: The UV lamp inside the stainless steel chamber emits ultraviolet light, specifically in the UV-C spectrum. This wavelength is highly effective at damaging the DNA and RNA of microorganisms like bacteria, viruses, and protozoa.
• Inactivation, not removal: Unlike filters that physically remove particles, UV light inactivates these pathogens, preventing them from reproducing and causing illness. It does not remove dissolved solids or chemicals.
• Post-RO Safeguard: While RO membranes are very effective at removing most microorganisms, a UV sterilizer is often placed after the RO unit (and sometimes after a storage tank) as an additional safeguard. This ensures that any potential microbial contamination that might have bypassed the RO membrane or entered the water downstream of the RO unit is eliminated before the water is used or bottled.