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

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

    $133.40
    sku: ST13906-50-ACN
  2. Membrane filter, CN, 50 mm, 0.45µm, 100 pc/PAK Membrane filter, CN, 50 mm, 0.45µm, 100 pc/PAK
    Sartorius

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

    $115.00
    sku: ST11306-50-N
  3. Membrane filter, round, CN, 47 mm, 0.45µm, white-green, sterile, 100 pc/PAK Membrane filter, round, CN, 47 mm, 0.45µm, white-green, sterile, 100 pc/PAK
    Sartorius

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

    $131.10
    sku: ST13906-47-ACN
  4. Membrane filter, round, NC45, CN, 50 mm, 0,45 µm, 100/pk Membrane filter, round, NC45, CN, 50 mm, 0,45 µm, 100/pk
    Whatman

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

    $220.46
    sku: WH10401114
  5. Membranfilter, MCE, ME 25, 50 mm, 0,45 µm, white, w/o net 100/Pak Membranfilter, MCE, ME 25, 50 mm, 0,45 µm, white, w/o net 100/Pak
    Whatman

    Membranfilter, MCE, ME 25, 50 mm, 0,45 µm, white, w/o net 100/Pak

    $153.12
    sku: WH10401614
  6. Membrane filter, round, NC10, CN, 50 mm, 0,10 µm, 100/pk Membrane filter, round, NC10, CN, 50 mm, 0,10 µm, 100/pk
    Whatman

    Membrane filter, round, NC10, CN, 50 mm, 0,10 µm, 100/pk

    $226.32
    sku: WH10402014
  7. Membrane filter, round, Nuclepore, PC, 25 mm, 5,00 µm, 100/pk Membrane filter, round, Nuclepore, PC, 25 mm, 5,00 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 5,00 µm, 100/pk

    $77.28
    sku: WH110613
  8. Membrane filter, round, Nuclepore, PC, 47 mm, 1,00 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 1,00 µm, 100/pk
    Whatman

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

    $134.29
    sku: WH111110
  9. Membrane filter, round, Nuclepore, PC, 47 mm, 5,00 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 5,00 µm, 100/pk
    Whatman

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

    $134.29
    sku: WH111113
  10. Membrane filter, round, Nuclepore, PC, 47 mm, 10,0 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 10,0 µm, 100/pk
    Whatman

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

    $134.29
    sku: WH111115
  11. Membrane filter, CN, 100 mm, 0.45µm, 25 pc/PAK Membrane filter, CN, 100 mm, 0.45µm, 25 pc/PAK
    Sartorius

    Membrane filter, CN, 100 mm, 0.45µm, 25 pc/PAK

    $159.85
    sku: ST11306-100-G
  12. Membrane filter, CN, 25 mm, 0.45µm, 100 pc/PAK Membrane filter, CN, 25 mm, 0.45µm, 100 pc/PAK
    Sartorius

    Membrane filter, CN, 25 mm, 0.45µm, 100 pc/PAK

    $98.33
    sku: ST11306-25-N
  13. Membrane filter, CN, 47 mm, 0.45µm, 100 pc/PAK Membrane filter, CN, 47 mm, 0.45µm, 100 pc/PAK
    Sartorius

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

    $115.00
    sku: ST11306-47-N
  14. Membrane filter, CN, 47 mm, 1.2µm, white-black, sterile, 100 pc/PAK Membrane filter, CN, 47 mm, 1.2µm, white-black, sterile, 100 pc/PAK
    Sartorius

    Membrane filter, CN, 47 mm, 1.2µm, white-black, sterile, 100 pc/PAK

    $131.10
    sku: ST11403-47-ACN
  15. Membrane filter, CN, 47 mm, 0.45µm, white-black, sterile, 100 pc/PAK Membrane filter, CN, 47 mm, 0.45µm, white-black, sterile, 100 pc/PAK
    Sartorius

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

    $131.10
    sku: ST11406-47-ACN
  16. Membrane filter, round, AE100, CN, 47 mm, 12,0 µm, 100/pk Membrane filter, round, AE100, CN, 47 mm, 12,0 µm, 100/pk
    Whatman

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

    $229.84
    sku: WH10400012
  17. Membrane filter, round, AE99, CN, 50 mm, 8,00 µm, 100/pk Membrane filter, round, AE99, CN, 50 mm, 8,00 µm, 100/pk
    Whatman

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

    $239.22
    sku: WH10400114
  18. Membrane filter, round, AE98, CN, 47 mm, 5,00 µm, 100/pk Membrane filter, round, AE98, CN, 47 mm, 5,00 µm, 100/pk
    Whatman

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

    $229.84
    sku: WH10400212
  19. Membrane filter, round, ME28, MCE, 25 mm, 1,20 µm, 100/pk Membrane filter, round, ME28, MCE, 25 mm, 1,20 µm, 100/pk
    Whatman

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

    $146.26
    sku: WH10400806
  20. Membrane filter, round, ME25, ME, 25 mm, 0,45 µm, 100/pk Membrane filter, round, ME25, ME, 25 mm, 0,45 µm, 100/pk
    Whatman

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

    $108.23
    sku: WH10401606
  21. Membrane filter, round, ME24, MCE, 142 mm, 0,20 µm, 25/pk Membrane filter, round, ME24, MCE, 142 mm, 0,20 µm, 25/pk
    Whatman

    Membrane filter, round, ME24, MCE, 142 mm, 0,20 µm, 25/pk

    $172.50
    sku: WH10401731
  22. Membrane filter, round, OE67, CA, 25 mm, 0,45 µm, 100/pk Membrane filter, round, OE67, CA, 25 mm, 0,45 µm, 100/pk
    Whatman

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

    $141.78
    sku: WH10404006
  23. Membrane filter, round, OE66, CA, 25 mm, 0,20 µm, 100/pk Membrane filter, round, OE66, CA, 25 mm, 0,20 µm, 100/pk
    Whatman

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

    $141.78
    sku: WH10404106
  24. Membrane filter, round, RC55, RC, 25 mm, 0,45 µm, 100/pk Membrane filter, round, RC55, RC, 25 mm, 0,45 µm, 100/pk
    Whatman

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

    $188.80
    sku: WH10410206
  25. Membrane filter, round, RC55, RC, 50 mm, 0,45 µm, 100/pk Membrane filter, round, RC55, RC, 50 mm, 0,45 µm, 100/pk
    Whatman

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

    $284.96
    sku: WH10410214
  26. Membrane filter, round, RC55, RC, 100 mm, 0,45 µm, 25/pk Membrane filter, round, RC55, RC, 100 mm, 0,45 µm, 25/pk
    Whatman

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

    $199.35
    sku: WH10410219
  27. Membrane filter, round, RC58, RC, 47 mm, 0,20 µm, 100/pk Membrane filter, round, RC58, RC, 47 mm, 0,20 µm, 100/pk
    Whatman

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

    $280.27
    sku: WH10410312
  28. Membrane filter, round, TE38, PTFE, 50 mm, 5,00 µm, 50/pk Membrane filter, round, TE38, PTFE, 50 mm, 5,00 µm, 50/pk
    Whatman

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

    $320.14
    sku: WH10411113
  29. Membrane filter, round, Nuclepore, PC, 13 mm, 0,20 µm, 100/pk Membrane filter, round, Nuclepore, PC, 13 mm, 0,20 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 13 mm, 0,20 µm, 100/pk

    $54.51
    sku: WH110406
  30. Membrane filter, round, Nuclepore, PC, 25 mm, 0,015 µm, 100/pk Membrane filter, round, Nuclepore, PC, 25 mm, 0,015 µm, 100/pk
    Whatman

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

    $170.91
    sku: WH110601
  31. Membrane filter, round, Nuclepore, PC, 25 mm, 0,03 µm, 100/pk Membrane filter, round, Nuclepore, PC, 25 mm, 0,03 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 0,03 µm, 100/pk

    $122.54
    sku: WH110602
  32. Membrane filter, round, Nuclepore, PC, 25 mm, 0,08 µm, 100/pk Membrane filter, round, Nuclepore, PC, 25 mm, 0,08 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 0,08 µm, 100/pk

    $129.16
    sku: WH110604
  33. Membrane filter, round, Nuclepore, PC, 25 mm, 0,20 µm, 100/pk Membrane filter, round, Nuclepore, PC, 25 mm, 0,20 µm, 100/pk
    Whatman

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

    $77.28
    sku: WH110606
  34. Membrane filter, round, Nuclepore, PC, 25 mm, 0,80 µm, 100/pk Membrane filter, round, Nuclepore, PC, 25 mm, 0,80 µm, 100/pk
    Whatman

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

    $77.28
    sku: WH110609
  35. Membrane filter, round, Nuclepore, PC, 25 mm, 10,0 µm, 100/pk Membrane filter, round, Nuclepore, PC, 25 mm, 10,0 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 10,0 µm, 100/pk

    $77.28
    sku: WH110615
  36. Membrane filter, round, Nuclepore, PC, 47 mm, 0,015 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 0,015 µm, 100/pk
    Whatman

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

    $313.10
    sku: WH111101
  37. Membrane filter, round, Nuclepore, PC, 47 mm, 0,10 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 0,10 µm, 100/pk
    Whatman

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

    $229.84
    sku: WH111105
  38. Membrane filter, round, Nuclepore, PC, 47 mm, 0,20 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 0,20 µm, 100/pk
    Whatman

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

    $134.29
    sku: WH111106
  39. Membrane filter, round, Nuclepore, PC, 47 mm, 0,40 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 0,40 µm, 100/pk
    Whatman

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

    $134.29
    sku: WH111107
  40. Membrane filter, round, Nuclepore, PC, 47 mm, 3,00 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 3,00 µm, 100/pk
    Whatman

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

    $134.29
    sku: WH111112
  41. Membrane filter, round, Nuclepore, PC, 47 mm, 8,00 µm, 100/pk Membrane filter, round, Nuclepore, PC, 47 mm, 8,00 µm, 100/pk
    Whatman

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

    $134.29
    sku: WH111114
  42. Membrane filter, round, Nuclepore, PC, 50 mm, 12,0 µm, 100/pk Membrane filter, round, Nuclepore, PC, 50 mm, 12,0 µm, 100/pk
    Whatman

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

    $150.28
    sku: WH111216
  43. Membrane filter, round, Cyclopore PC, 25 mm, 2,00 µm, 100/pk Membrane filter, round, Cyclopore PC, 25 mm, 2,00 µm, 100/pk
    Whatman

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

    $73.29
    sku: WH7060-2511
  44. Membrane filter, round, Cyclopore PC, 47 mm, 0,20 µm, 100/pk Membrane filter, round, Cyclopore PC, 47 mm, 0,20 µm, 100/pk
    Whatman

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

    $155.96
    sku: WH7060-4702
  45. Membrane filter, round, Cyclopore PC, 47 mm, 3,00 µm, 100/pk Membrane filter, round, Cyclopore PC, 47 mm, 3,00 µm, 100/pk
    Whatman

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

    $126.25
    sku: WH7060-4712
  46. Membrane filter, round, Cyclopore PC, 47 mm, 5,00 µm, 100/pk Membrane filter, round, Cyclopore PC, 47 mm, 5,00 µm, 100/pk
    Whatman

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

    $126.25
    sku: WH7060-4713
  47. Membrane filter, round, WCN, CN, 47 mm, 3,00 µm, 100/pk Membrane filter, round, WCN, CN, 47 mm, 3,00 µm, 100/pk
    Whatman

    Membrane filter, round, WCN, CN, 47 mm, 3,00 µm, 100/pk

    $193.49
    sku: WH7193-004
  48. Membrane filter, round, PA, 47 mm, 0,80 µm Membrane filter, round, PA, 47 mm, 0,80 µm
    Whatman

    Membrane filter, round, PA, 47 mm, 0,80 µm, 100/pk

    $181.76
    sku: WH7408-004
  49. Membrane filter, round, ME29, MCE, 50 mm, 3,00 µm, 100/pk Membrane filter, round, ME29, MCE, 50 mm, 3,00 µm, 100/pk
    Whatman

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

    $200.10
    sku: WH10400714
  50. Membranfilter, MCE, ME 25, 50 mm, 0,45 µm, sterile, 100/Pak Membranfilter, MCE, ME 25, 50 mm, 0,45 µm, sterile, 100/Pak
    Whatman

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

    $165.54
    sku: WH10401672
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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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