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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 typeMaterialPore size* (µm)Diameter (mm)RectangularBrand name
Track-EtchedPolyester
(Polyethylene
Terephthalate)
0.1, 0.2, 0.4, 1.0, 5.013, 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, 12.013, 19, 25, 37, 47, 50, 76, 90, 142, 29319 x 42 mm,
25 x 80 mm,
8 x 10 inches
 
AnoporeAluminum Oxide0.02, 0.1, 0.213, 21, 47300 x 600 mmAnodisc
Cellulose basedRegenerated Cellulose0.2, 0.45, 1.025, 47, 50, 100, 110, 142300 x 600 mm-
 Cellulose Acetate0.2, 0.45, 0.8, 1.213, 25, 47, 50, 85, 100, 110, 142, 293300 x 600 mm 
 Cellulose Nitrate0.025, 0.1, 0.2, 0.45, 0.65, 0.8, 1, 1.2, 3, 5, 8, 1213, 24, 25, 30, 47, 50, 82, 90, 100, 110, 142, 293300 X 600 mm 
 Mixed Cellulose Ester
(Mixture of Cellulose Acetate and Cellulose Nitrate)
0.2, 0.45, 0.6, 0.8, 1.2, 325, 37, 47, 50, 90, 100, 110, 142- 
Polytetrafluoro
-ethylene (PTFE)
Polytetrafluoro
-ethylene
0.2, 0.45, 0.5, 1, 525, 37, 47, 50, 90, 150--
Nylon (Polyamide)Hexamethylene-
diamine; Nylon 66
0.2, 0.45, 0.8, 113, 25, 47, 50, 90, 142--
Polyethersulfone (PES)Polyethersulfone0.847--
PolypropylenePolypropylene0.2, 0.45, 1.025, 47, 90
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