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Membrane filters are surface filters used to remove particulate or collect microorganism for analysis from solutions, mainly on and near the surface of the filter matrix by mechanical means. Our broad offering of membrane materials (PTFE, regenerated cellulose, nylon, cellulose nitrate, polycarbonate, aluminum oxide, etc.) provides the user with an array of solvent compatibility options, porosities, and pore sizes according to individual specific needs. Some membrane materials are also available in sterile format.

Membrane filters are typically used in both liquid and air filtration. They offer accurately controlled pore size distribution with high strength and flexibility and are a suitable choice for a wide range of applications such as basic research, environmental testing, and pharmaceutical as well as food and beverage industries. We offer membrane filters by  industry leaders such as Sartorius and Whatman.

Here you can find more information about the membrane filter materials.

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Membrane Filters

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  1. Sartorius

    Membrane filter, round, CN, 50 mm, 0.45µm, white-green, sterile, 100 pc/PAK

    Regular Price: $147.32

    Special Price $139.95

    sku: ST13906-50-ACN
  2. Sartorius

    Membrane filter, CN, 50 mm, 0.45µm, 100 pc/PAK

    Regular Price: $126.69

    Special Price $120.36

    sku: ST11306-50-N
  3. Sartorius

    Membrane filter, round, CN, 47 mm, 0.45µm, white-green, sterile, 100 pc/PAK

    Regular Price: $144.75

    Special Price $137.51

    sku: ST13906-47-ACN
  4. Whatman

    Membrane filter, round, NC45, CN, 50 mm, 0,45 µm, 100/pk

    Regular Price: $240.83

    Special Price $228.79

    sku: WH10401114
  5. Sartorius

    Membrane filter, CN, 50 mm, 0.8µm, 100 pc/PAK

    Regular Price: $207.52

    Special Price $197.14

    sku: ST11304-50-N
  6. Sartorius

    Membrane filter, CN, 50 mm, 0.65µm, 100 pc/PAK

    Regular Price: $207.52

    Special Price $197.14

    sku: ST11305-50-N
  7. Sartorius

    Membrane filter, CN, 47 mm, 0.45µm, 100 pc/PAK

    Regular Price: $126.69

    Special Price $120.36

    sku: ST11306-47-N
  8. Whatman

    Membrane filter, round, AE100, CN, 47 mm, 12,0 µm, 100/pk

    Regular Price: $251.08

    Special Price $238.53

    sku: WH10400012
  9. Whatman

    Membrane filter, round, AE99, CN, 47 mm, 8,00 µm, 100/pk

    Regular Price: $251.08

    Special Price $238.53

    sku: WH10400112
  10. Whatman

    Membrane filter, round, AE99, CN, 50 mm, 8,00 µm, 100/pk

    Regular Price: $261.32

    Special Price $248.25

    sku: WH10400114
  11. Whatman

    Membrane filter, round, AE98, CN, 47 mm, 5,00 µm, 100/pk

    Regular Price: $251.08

    Special Price $238.53

    sku: WH10400212
  12. Whatman

    Membrane filter, round, ME29, MCE, 50 mm, 3,00 µm, 100/pk

    Regular Price: $219.05

    Special Price $208.10

    sku: WH10400714
  13. Whatman

    Membrane filter, round, ME28, MCE, 25 mm, 1,20 µm, 100/pk

    Regular Price: $159.77

    Special Price $151.78

    sku: WH10400806
  14. Whatman

    Membrane filter, round, ME25, ME, 25 mm, 0,45 µm, 100/pk

    Regular Price: $118.22

    Special Price $112.31

    sku: WH10401606
  15. Whatman

    Membranfilter, MCE, ME 25, 50 mm, 0,45 µm, sterile, 100/Pak

    Regular Price: $180.84

    Special Price $171.80

    sku: WH10401672
  16. Whatman

    Membrane filter, round, OE67, CA, 25 mm, 0,45 µm, 100/pk

    Regular Price: $154.89

    Special Price $147.15

    sku: WH10404006
  17. Whatman

    Membrane filter, round, OE66, CA, 25 mm, 0,20 µm, 100/pk

    Regular Price: $154.89

    Special Price $147.15

    sku: WH10404106
  18. Whatman

    Membrane filter, round, RC55, RC, 25 mm, 0,45 µm, 100/pk

    Regular Price: $206.24

    Special Price $195.93

    sku: WH10410206
  19. Whatman

    Membrane filter, round, RC55, RC, 47 mm, 0,45 µm, 100/pk

    Regular Price: $306.16

    Special Price $290.85

    sku: WH10410212
  20. Whatman

    Membrane filter, round, RC55, RC, 50 mm, 0,45 µm, 100/pk

    Regular Price: $311.28

    Special Price $295.72

    sku: WH10410214
  21. Whatman

    Membrane filter, round, RC55, RC, 100 mm, 0,45 µm, 25/pk

    Regular Price: $217.77

    Special Price $206.88

    sku: WH10410219
  22. Whatman

    Membrane filter, round, RC58, RC, 47 mm, 0,20 µm, 100/pk

    Regular Price: $306.16

    Special Price $290.85

    sku: WH10410312
  23. Whatman

    Membrane filter, round, TE38, PTFE, 50 mm, 5,00 µm, 50/pk

    Regular Price: $349.71

    Special Price $332.22

    sku: WH10411113
  24. Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 0,015 µm, 100/pk

    Regular Price: $186.71

    Special Price $177.37

    sku: WH110601
  25. Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 0,20 µm, 100/pk

    Regular Price: $84.42

    Special Price $80.20

    sku: WH110606
  26. Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 0,80 µm, 100/pk

    Regular Price: $84.42

    Special Price $80.20

    sku: WH110609
  27. Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 0,015 µm, 100/pk

    Regular Price: $342.03

    Special Price $324.93

    sku: WH111101
  28. Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 0,10 µm, 100/pk

    Regular Price: $251.08

    Special Price $238.53

    sku: WH111105
  29. Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 0,20 µm, 100/pk

    Regular Price: $146.69

    Special Price $139.36

    sku: WH111106
  30. Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 0,40 µm, 100/pk

    Regular Price: $146.69

    Special Price $139.36

    sku: WH111107
  31. Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 1,00 µm, 100/pk

    Regular Price: $146.69

    Special Price $139.36

    sku: WH111110
  32. Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 5,00 µm, 100/pk

    Regular Price: $146.69

    Special Price $139.36

    sku: WH111113
  33. Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 8,00 µm, 100/pk

    Regular Price: $146.69

    Special Price $139.36

    sku: WH111114
  34. Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 10,0 µm, 100/pk

    Regular Price: $146.69

    Special Price $139.36

    sku: WH111115
  35. Whatman

    Membrane filter, round, Nuclepore, PC, 50 mm, 12,0 µm, 100/pk

    Regular Price: $164.17

    Special Price $155.96

    sku: WH111216
  36. Whatman

    Membrane filter, round, Nuclepore, PC, 90 mm, 0,05 µm, 25/pk

    Regular Price: $155.23

    Special Price $147.47

    sku: WH111703
  37. Whatman

    Membrane filter, round, Nuclepore, PC, 90 mm, 0,10 µm, 25/pk

    Regular Price: $170.37

    Special Price $161.85

    sku: WH111705
  38. Whatman

    Membrane filter, round, Nuclepore, PC, 90 mm, 0,20 µm, 25/pk

    Regular Price: $170.37

    Special Price $161.85

    sku: WH111706
  39. Whatman

    Membrane filter, round, Cyclopore PC, 25 mm, 2,00 µm, 100/pk

    Regular Price: $80.06

    Special Price $76.06

    sku: WH7060-2511
  40. Whatman

    Membrane filter, round, Cyclopore PC, 47 mm, 0,20 µm, 100/pk

    Regular Price: $170.37

    Special Price $161.85

    sku: WH7060-4702
  41. Whatman

    Membrane filter, round, Cyclopore PC, 47 mm, 3,00 µm, 100/pk

    Regular Price: $137.91

    Special Price $131.01

    sku: WH7060-4712
  42. Whatman

    Membrane filter, round, Cyclopore PC, 47 mm, 5,00 µm, 100/pk

    Regular Price: $137.91

    Special Price $131.01

    sku: WH7060-4713
  43. Sartorius

    Membrane filter, CN, 47 mm, 0.8µm, white-black, sterile, 1000 pc/PAK

    Regular Price: $921.04

    Special Price $874.99

    sku: ST11404-47-ACR
  44. Sartorius

    Membrane filter, CN, 47 mm, 0.45µm, white-black, sterile, 100 pc/PAK

    Regular Price: $144.75

    Special Price $137.51

    sku: ST11406-47-ACN
  45. Macherey-Nagel

    Membrane filter, round, Porafil MV, MCE, 47 mm, 0,45 µm, white, 50/pac

    Regular Price: $80.70

    Special Price $76.67

    sku: MN65000045047
  46. Macherey-Nagel

    Membrane filter, round, Porafil NC, CN, 50 mm, 0,45 µm, white, 50/pac

    Regular Price: $101.84

    Special Price $96.75

    sku: MN6570045050
  47. Macherey-Nagel

    Membrane filter, round, Porafil CA, CA, 13 mm, 0,45 µm, white, 100/pac

    Regular Price: $105.04

    Special Price $99.79

    sku: MN68000045013
  48. Sartorius

    Membrane filter, CA, 50 mm, 0.8µm, 100 pc/PAK

    Regular Price: $174.22

    Special Price $165.51

    sku: ST11104-50-N
  49. Sartorius

    Membrane filter, CA, 50 mm, 0.45µm, 100 pc/PAK

    Regular Price: $160.13

    Special Price $152.12

    sku: ST11106-50-N
  50. Sartorius

    Membrane filter, CA, 47 mm, 0.2µm, 100 pc/PAK

    Regular Price: $148.60

    Special Price $141.17

    sku: ST11107-47-N
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Membrane filter of differnet materials possesses  specific properties. Therefore the choice of the correct filter extremly depends on the chemicals used. 
The following table gives an overview of application areas and chemical resistence of every single polymere. 

Celluloseacetate (CA)

Low protein-binding, well suited for sterile filtration and clarification of aqueous solutions, nutrient media, buffers, and sera, they provide superior chemical resistance to alcohol and oil. These hydrophilic membranes offer excellent flow rates as well as thermal stability up to 180°C max.

Cellulosenitrate (CN)

Cellulose nitrate membranes set the standard in both analytical and microbiological filtration. Cellulose nitrate is available in a range of pore sizes and is well suited for microbial analysis in water, food and beverage applications. Available in dispenser strips or individually sealed.

Polyamide (PA)

Membranes are hydrophilic and are widely used in both aqueous and organic solvent filtration applications. Well suited for sterilization and clarification of buffers and nutrient media with a low level of extractables.

Polycarbonate (PC)

PC membranes have uniform, smooth-bore, round pores that pass straight through the membrane creating a precise capillary structure. The smooth, flat surface of the PC membrane offers high visibility of captured particles.

Polytetrafluorethylen (PTFE)

Permanently hydrophobic filter material, very suitable for air and gas filtration. PTFE membranes are extremely resistant to aggressive solvents and acids and can be used to filter particulate from both liquid and gas samples.

Regenerated Cellulose (RC)

Regenerated cellulose membranes are resistant to solvents and are hydrophilic. 0.45 μm pore size is typically used for HPLC sample preparation.

 

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