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Cole-Parmer UK Catalog > Filtration > Filtration Sizing

Filtration Sizing

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	Bottle Top/Filter Units
	In-Line Filters/Capsules/Hollow Fiber
	Filter Paper/Filter Membranes
	Syringe Filters
	Vacuum/Pressure Filters
	Cartridge Style Filters for Liquids
	Bag Style Filters for Liquids
	Filters for Ultrapure liquids and gases

Use this general guide to determine the optimal type of filtration and sizing for your particle sizes. Each type of filtration is designed to separate differing ranges of microparticles and particles:

ultrafiltration is best with particles of roughly 10,000-1,000,000 MW; microfiltration is best with particle sizes of roughly 0.1-10�m;
macrofiltration is best with particle sizes greater than 50 �m.

Type of filtration	Ultrafiltration	Microfiltration	Macrofiltration
Units	Dalton (MW)	Microns (�m)	50 �m or greater; visible to the human eye
Particle examples and sizes	Trypsin (24,000) Serum albumin (67,000) Gamma globulin (169,000) Viruses (600,000 to 30,000) Endotoxins (500,000 to 12,000)	Mycoplasm (0.08 to 0.4) Proteins (0.0005 to 0.5) Fungi (0.7 to 3) Yeasts (0.6 to 4) Human red blood cells (3.5 to 8) Bacteria (0.3 to 12)	Spores Pollen Human hair Sands

Use Cole Parmer UK�s on-line catalogue to find and compare filtration specifications. Alternatively contact our Application Specialists for free technical support and let us bring over 50 years of filtration experience to help solve your application needs.

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