A 3-in-1 pre-filtration set is an integrated water filter combination widely used in household and commercial RO water purifiers. It normally combines PP cotton, UDF activated carbon and CTO compressed carbon into one complete pre-filtration unit.
This three-stage pre-filter is designed to remove large particles, sediment, rust, sand and peculiar smell from tap water. The PP cotton blocks visible impurities, while UDF absorbs chlorine odor and organic matter, and CTO further purifies water quality before entering the RO membrane.
Using a 3-in-1 pre-filtration set can effectively protect the RO membrane, reduce membrane blockage and extend the whole water purifier service life. It is easy to install, replace and suitable for 10-inch and 20-inch standard filter housings.
We support custom size, OEM logo and neutral packaging for global distributors. If you are looking for stable quality 3-in-1 pre-filtration sets for your market, we can provide tailored solutions and bulk supply.