Membranes

Whatman brings to the laboratory user a range of membrane filters whose advanced technical specifications make them today’s preferred choice for a wide range of applications. The membrane filters offer accurately controlled pore size distribution and higher strength and flexibility which ensure reproducibility and consistency. The Whatman membrane filter range includes pore sizes from 0.015 to 12 µm with a wide selection of membrane filters. Sterile and autoclave packs are available for specialized applications. Colored and gridded types are also available.

Quick Pick Reference Chart

Membranes
Membrane type	Material	Pore size* (µm)	Diameter (mm)	Rectangular	Brand name
Track-Etched	Polyester (Polyethylene Terephthalate)	0.1, 0.2, 0.4, 1.0, 5.0	13, 25, 47	-	Cyclopore Nuclepore
	Polycarbonate (4, 4-hydroxy-diphenyl-2, 2’-propane)	0.015, 0.03, 0.05, 0.08, 0.1, 0.2, 0.4, 0.6, 0.8, 1.0, 2.0, 3.0, 5.0, 8.0, 10.0, 12.0	13, 19, 25, 37, 47, 50, 76, 90, 142, 293	19 x 42 mm, 25 x 80 mm, 8 x 10 inches
Anopore	Aluminum Oxide	0.02, 0.1, 0.2	13, 21, 47	300 x 600 mm	Anodisc
Cellulose based	Regenerated Cellulose	0.2, 0.45, 1.0	25, 47, 50, 100, 110, 142	300 x 600 mm	-
	Cellulose Acetate	0.2, 0.45, 0.8, 1.2	13, 25, 47, 50, 85, 100, 110, 142, 293	300 x 600 mm
	Cellulose Nitrate	0.025, 0.1, 0.2, 0.45, 0.65, 0.8, 1, 1.2, 3, 5, 8, 12	13, 24, 25, 30, 47, 50, 82, 90, 100, 110, 142, 293	300 X 600 mm
	Mixed Cellulose Ester (Mixture of Cellulose Acetate and Cellulose Nitrate)	0.2, 0.45, 0.6, 0.8, 1.2, 3	25, 37, 47, 50, 90, 100, 110, 142	-
Polytetrafluoro -ethylene (PTFE)	Polytetrafluoro -ethylene	0.2, 0.45, 0.5, 1, 5	25, 37, 47, 50, 90, 150	-	-
Nylon (Polyamide)	Hexamethylene- diamine; Nylon 66	0.2, 0.45, 0.8, 1	13, 25, 47, 50, 90, 142	-	-
Polyethersulfone (PES)	Polyethersulfone	0.8	47	-	-
Polypropylene	Polypropylene	0.2, 0.45, 1.0	25, 47, 90	-	-