Polypropylene (PP) Filter Media
Definition
A thermoplastic filter medium prized for broad chemical compatibility, low cost and freedom from binders or additives.
Polypropylene is the most widely used high-flow media because it resists most acids, bases and aqueous solutions and contains no adhesives or surfactants that could leach into the fluid. It suits temperatures up to roughly 80 °C.
PP is available as meltblown depth media or pleated media across 1–100 µm, offering nominal to fine filtration for water treatment, chemicals and general process liquids.
Relevance for high-flow filtration
R+F offers PP high-flow elements as a direct replacement for OEM polypropylene cartridges, with FDA-compliant grades available.
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Related terms
A high-efficiency, absolute-rated pleated medium made from fine borosilicate glass microfibers, used for demanding fine filtration.
Meltblown MediaA depth-filtration medium formed by blowing molten polymer into fine, randomly layered microfibers that trap particles throughout the media thickness.
Chemical CompatibilityThe suitability of a filter’s media and seal materials for the fluid being filtered, over the operating temperature and pressure range.
Micron RatingThe nominal particle size, in micrometers (µm), that a filter is designed to remove — stated as either an absolute or a nominal value.
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