Filtration

Fundamentals of Filtration

Filtration is a technique that utilizes a porous barrier to separate suspended or dissolved materials in solution based on size or molecular weight, eliminating the need for centrifugation, solvent phase changes or other product damaging methods. Application of positive or negative pressure differential across the selectively permeable barrier drives the separation in a sieve-like manner.

Small constituents pass through the barrier with the solvent as filtrate while the larger solutes are retained. The type of filtration is based on the retentate and pore size. Spectrum offers a complete range of separation filters for macrofiltration, microfiltration and ultrafiltration applications.

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