pur filter model rf

Manufacturers describe RF cartridges as lasting up to about 3 months of typical use, or roughly 100 gallons of water per cartridge.

RF-style filters are described as reducing a range of chemical and physical contaminants — examples cited include lead, chlorine, mercury, microplastics, and tastes/odors. One description states reductions across about 70 contaminants in total.

Listings reference testing and certification such as WQA and NSF. Some compatible replacement descriptions specifically cite NSF/ANSI standards — for example NSF/ANSI 42 (taste/odor and chlorine reduction) and NSF/ANSI 372 (lead-free materials) — rather than claiming blanket certification for every product.

Descriptions mention carbon-based media and a mineral-core technology. Examples include PUR's Mineral Core filters and compatible replacements using an active coconut carbon block plus a mineral-based core; product notes also list carbon as the primary filter material and BPA-free parts.

One RF cartridge is described as treating up to about 100 gallons of water — typically framed as roughly 3 months of normal household use.

Compatible replacements often state independent testing or certification, citing organizations such as NSF and ISO and referencing specific standards. Examples in listings include testing to NSF/ANSI 42 and NSF/ANSI 372; individual product listings vary in which tests or certifications they reference.