Pure water that is used within a Hospital environment is classified into 3 types: Type 1, Type 2 and Type 3. Out of the three types, Type 3 is the least pure in quality and is used in applications such as cleaning equipment and tools used in procedures and feeding autoclaves to produce pure steam. Even though the purest water is not required, it is still important for Type 3 water to be thoroughly cleaned to stop bacterial contamination within labs and patient rooms. Pure water will also remove scale and particle build up within machines and tools, increasing their service life and making them much safer to use.
To purify the water to this level and ensure no scale build up, particulates and organics need to be removed from the water before the reverse osmosis stage. This will further the filtration by removing ~99% of bacteria, ions and dissolved solids from the water. A polishing stage removes all remaining salts and ions using deionisation resin, before going through final Ultraviolet sterilisation to control the future growth of bacteria and microorganisms within the water when it is stored.
