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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
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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 |
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