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Membrane filters are surface filters used to remove particulate or collect microorganism for analysis from solutions, on and near the surface of the filter matrix by mechanical means. Our wide range 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 sterile.

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 suitable  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.

Click here for more information on membrane filter materials.

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Membrane Filters

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  1. Membrane filter, round, Ultipor Nylon, PA, 47 mm, 5,00 µm, 100/pac
    Pall Corporation

    Membrane filter, round, Ultipor Nylon, PA, 47 mm, 5,00 µm, 100/pac

    $235.20
    sku: PANCG047100
  2. Membrane Filter, CN, 50 mm, 0.45µm, 100 pc/PAK
    Sartorius

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

    $132.00
    sku: ST-11306-50-N
  3. Membrane filter, round, Nuclepore, PC, 19 mm, 0,40 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 19 mm, 0,40 µm, 100/pk

    $86.74
    sku: WH10417104
  4. Membrane Filter, round, Nuclepore, PC, 25 mm, 0.8 µm, 100 pc/PAK
    Whatman

    Membrane Filter, round, Nuclepore, PC, 25 mm, 0.8 µm, 100 pc/PAK

    $105.09
    sku: WH-10417306
  5. Membrane Filter, round, Nuclepore, PC, 37 mm, 0.8 µm, 100 pc/PAK
    Whatman

    Membrane Filter, round, Nuclepore, PC, 37 mm, 0.8 µm, 100 pc/PAK

    $150.75
    sku: WH-10417309
  6. Membrane Filter, round, Nuclepore, PC, 13 mm, 0.2 µm, 100 pc/PAK
    Whatman

    Membrane Filter, round, Nuclepore, PC, 13 mm, 0.2 µm, 100 pc/PAK

    $81.81
    sku: WH-10417001
  7. Membrane Filter, round, Nuclepore, PC, 13 mm, 0.8 µm, 100 pc/PAK
    Whatman

    Membrane Filter, round, Nuclepore, PC, 13 mm, 0.8 µm, 100 pc/PAK

    $91.17
    sku: WH-10417301
  8. 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

    $226.13
    sku: WH-10401114
  9. 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

    $147.89
    sku: WH-10401614
  10. 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

    $229.33
    sku: WH-10402014
  11. 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

    $147.53
    sku: WH-10404106
  12. Membrane filter, round, ME24/21 ST, MCE, 47 mm, 0,20 µm, 100/pk
    Whatman

    Membrane filter, round, ME24/21 ST, MCE, 47 mm, 0,20 µm, 100/pk

    $52.44
    sku: WH-10406970
  13. Membrane filter, round, ME25/31, MCE, 50 mm, 0,45 µm, black, sterile, 100/pk
    Whatman

    Membrane filter, round, ME25/31, MCE, 50 mm, 0,45 µm, black, sterile, 100/pk

    $161.63
    sku: WH-10409772
  14. Membrane filter, round, RC60, RC, 47 mm, 1,00 µm, 100/pk
    Whatman

    Membrane filter, round, RC60, RC, 47 mm, 1,00 µm, 100/pk

    $288.00
    sku: WH-10410012
  15. Membrane filter, round, TE38, PTFE, 47 mm, 5,00 µm, 50/pk
    Whatman

    Membrane filter, round, TE38, PTFE, 47 mm, 5,00 µm, 50/pk

    $327.47
    sku: WH-10411111
  16. Membrane filter, round, TE36, PTFE, 50 mm, 0,45 µm, 50/pk
    Whatman

    Membrane filter, round, TE36, PTFE, 50 mm, 0,45 µm, 50/pk

    $334.93
    sku: WH-10411313
  17. Membrane filter, round, NL16, PA, 47 mm, 0,20 µm, 100/pk
    Whatman

    Membrane filter, round, NL16, PA, 47 mm, 0,20 µm, 100/pk

    $207.12
    sku: WH-10414012
  18. Membrane filter, round, Nuclepore, PC, 13 mm, 1,00 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 13 mm, 1,00 µm, 100/pk

    $83.87
    sku: WH-110410
  19. Membrane filter, round, Nuclepore, PC, 25 mm, 0,05 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 0,05 µm, 100/pk

    $178.96
    sku: WH-110603
  20. 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

    $107.72
    sku: WH-110609
  21. Membrane filter, round, Nuclepore, PC, 25 mm, 1,00 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 25 mm, 1,00 µm, 100/pk

    $107.72
    sku: WH-110610
  22. 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

    $435.20
    sku: WH-111101
  23. Membrane filter, round, Nuclepore, PC, 47 mm, 0,05 µm, 100/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 47 mm, 0,05 µm, 100/pk

    $314.67
    sku: WH-111103
  24. 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

    $186.64
    sku: WH-111112
  25. Membrane filter, round, Nuclepore, PC, 90 mm, 0,05 µm, 25/pk
    Whatman

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

    $218.67
    sku: WH-111703
  26. Membrane filter, round, Nuclepore, PC, 142 mm, 1,00 µm, 25/pk
    Whatman

    Membrane filter, round, Nuclepore, PC, 142 mm, 1,00 µm, 25/pk

    $336.00
    sku: WH-112110
  27. Capsule Filter, Polycap TF 75, 0.2µ
    Whatman

    Capsule Filter, Polycap TF 75, 0.2µ

    $142.63
    sku: WH-6700-7502
  28. Capsule Filter, Polycap AS 36, 0.2µ
    Whatman

    Capsule Filter, Polycap AS 36, 0.2µ

    $69.20
    sku: WH-6708-3602
  29. Capsule Filter, Polycap TF 75, 0.2µ
    Whatman

    Capsule Filter, Polycap TF 75, 0.2µ

    $142.63
    sku: WH-6711-7502
  30. Membrane filter, round, Anodisc, AL2O3, 47 mm, 0,20 µm, with Supp., 50/pk
    Whatman

    Membrane filter, round, Anodisc, AL2O3, 47 mm, 0,20 µm, with Supp., 50/pk

    $1,278.93
    sku: WH-6809-5022
  31. Membrane filter, round, Anodisc, AL2O3, 25 mm, 0,10 µm, with Supp., 50/pk
    Whatman

    Membrane filter, round, Anodisc, AL2O3, 25 mm, 0,10 µm, with Supp., 50/pk

    $768.00
    sku: WH-6809-6012
  32. Membrane filter, round, Anodisc, AL2O3, 25 mm, 0,20 µm, with Supp., 50/pk
    Whatman

    Membrane filter, round, Anodisc, AL2O3, 25 mm, 0,20 µm, with Supp., 50/pk

    $768.00
    sku: WH-6809-6022
  33. Membrane filter, round, Anodisc, AL2O3, 13 mm, 0,10 µm, 100/pk, without Supp.
    Whatman

    Membrane filter, round, Anodisc, AL2O3, 13 mm, 0,10 µm, 100/pk, without Supp.

    $627.20
    sku: WH-6809-7013
  34. 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

    $112.75
    sku: WH-7060-2511
  35. Membrane filter, round, Cyclopore PC, 47 mm, 0,10 µm, 100/pk
    Whatman

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

    $194.20
    sku: WH-7060-4701
  36. Membrane filter, round, Cyclopore PC, 47 mm, 1,00 µm, 100/pk
    Whatman

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

    $194.20
    sku: WH-7060-4710
  37. 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

    $194.20
    sku: WH-7060-4712
  38. Membrane filter, round, Cyclopore PC Clear, 25 mm, 5,00 µm, 100/pk
    Whatman

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

    $138.80
    sku: WH-7062-2513
  39. Membrane filter, round, WCN, CN, 25 mm, 0,10 µm, 100/pk
    Whatman

    Membrane filter, round, WCN, CN, 25 mm, 0,10 µm, 100/pk

    $395.73
    sku: WH-7181-002
  40. Membrane filter, round, WCN, CN, 47 mm, 0,45 µm, 100/pk
    Whatman

    Membrane filter, round, WCN, CN, 47 mm, 0,45 µm, 100/pk

    $187.60
    sku: WH-7184-004
  41. Membrane filter, round, WCN, CN, 47 mm, 5,00 µm, 100/pk
    Whatman

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

    $237.87
    sku: WH-7195-004
  42. Membrane filter, round, ME26/31 ST, MCE, 50 mm, 0,60 µm, black, sterile, 100/pk
    Whatman

    Membrane filter, round, ME26/31 ST, MCE, 50 mm, 0,60 µm, black, sterile, 100/pk

    $192.51
    sku: WH-10409872
  43. Membrane Filter, CA, 25 mm, 0.8µm, 100 pc/PAK
    Sartorius

    Membrane Filter, CA, 25 mm, 0.8µm, 100 pc/PAK

    $230.00
    sku: ST-11104-25-N
  44. Membrane Filter, CA, 47 mm, 0.45µm, 100 pc/PAK
    Sartorius

    Membrane Filter, CA, 47 mm, 0.45µm, 100 pc/PAK

    $112.00
    sku: ST-11106-47-N
  45. Membrane Filter, CA, 13 mm, 0.2µm, 100 pc/PAK
    Sartorius

    Membrane Filter, CA, 13 mm, 0.2µm, 100 pc/PAK

    $74.00
    sku: ST-11107-13-N
  46. Membrane Filter, CA, 47 mm, 0.2µm, 100 pc/PAK
    Sartorius

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

    $114.00
    sku: ST-11107-47-N
  47. Membrane Filter, CN, 100 mm, 0.8µm, 25 pc/PAK
    Sartorius

    Membrane Filter, CN, 100 mm, 0.8µm, 25 pc/PAK

    $177.00
    sku: ST-11301-100-G
  48. Membrane Filter, CN, 25 mm, 0.8µm, 100 pc/PAK
    Sartorius

    Membrane Filter, CN, 25 mm, 0.8µm, 100 pc/PAK

    $114.00
    sku: ST-11301-25-N
  49. Membrane Filter, CN, 37 mm, 0.8µm, 100 pc/PAK
    Sartorius

    Membrane Filter, CN, 37 mm, 0.8µm, 100 pc/PAK

    $144.00
    sku: ST-11301-37-N
  50. Membrane Filter, CN, 47 mm, 0.8µm, 100 pc/PAK
    Sartorius

    Membrane Filter, CN, 47 mm, 0.8µm, 100 pc/PAK

    $186.00
    sku: ST-11301-47-N
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Membrane filter of differnet materials have specific properties. Therefore, the choice of the correct filter depends greatly on the chemicals used. 
The following table gives an overview of application areas and chemical resistence of each polymer. 

Celluloseacetate (CA)

Low protein-binding, well suited for sterile filtration and clear filtration 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 clear filtration of buffers and nutrient media with a low level of extractables.

Polycarbonate (PC)

PC membranes have uniform, smooth, 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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