Filtration
| Also Known As | Gravity filtration, vacuum filtration, membrane filtration, filter separation |
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What is Filtration?
A separation technique that removes solid particles from a liquid or gas by passing the mixture through a porous material (filter). Simple filtration uses filter paper; vacuum filtration (Buchner funnel) is faster. The residue on the filter is the precipitate; the liquid is the filtrate.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
A separation technique that removes solid particles from a liquid or gas by passing the mixture through a porous material (filter). Simple filtration uses filter paper; vacuum filtration (Buchner funnel) is faster. The residue on the filter is the precipitate; the liquid is the filtrate.
Filtration is used to: collect precipitates in gravimetric analysis, purify reaction products, clarify solutions, sterilise liquids (membrane filtration), remove particulates from industrial process streams, and in water treatment (sand filters). Ultrafiltration separates macromolecules by membrane …
Vacuum filtration with flammable solvents requires appropriate water-resistant trapping to prevent solvent ingestion into vacuum pump oil (environmental and fire hazard). Hot filtrations carry burn and bumping risks. Filtration of toxic or pathogenic suspensions requires containment.