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Membrane Filters

Membrane Filters

Tisch Scientific is your source for membrane filters and other micro-filtration devices. Our highest quality facility assures consistent quality across our wide variety of membrane filters. We offer competitive prices without compromising quality.

Whether you are performing simple bottle top filtration or operating a complex vacuum manifold system our expert staff is ready to help you with your membrane filter selections. Why not take advantage of over 30 years of experience in the business.

Beyond the expert advice we also offer a sample program and we’ll ship it to you right away.

Buy Membrane Filters here but first be informed. The Membrane Filter Technique (MF Technique) offers the advantage of isolating discrete colonies of bacteria, whereas the MPN procedure only indicates the presence or absence of an approximate number or organisms.The concentration of larger samples on a membrane filter is a key benefit of the technique over the MPN procedure as well as over Pour Plate and Spread Plate techniques.

Many industry and U.S. EPA test procedures require samples of 100 mL or more to be analyzed for the presence of bacteria. The Pour Plate technique is limited to a sample volume of 2 mL and the Spread Plate technique has a limit of 0.5 mL.

Using the Membrane Filter Technique, a 100 mL sample is passed through a 47 mm membrane using a filter funnel and vacuum system. Any organisms in the sample are concentrated on the surface of the membrane. The filter is then placed in a petri dish with nutrient medium. The passage of nutrients through the filter facilitates the growth of organisms on the upper surface of the membrane. The discrete colonies that form on the surface of the membrane can be easily transferred to confirmation media.

Municipal water treatment plants monitor drinking, waste, and surface water for the presence of coliform bacteria by the MF Technique. The key organism monitored in water treatment facilities is E. coli. The U.S. EPA considers this organism the leading indicator of fecal contamination.

In addition to its use by government labs for monitoring drinking water, the Membrane Filter Technique is also used for microbial monitoring in the pharmaceutical, cosmetics, electronics, and food and beverage industries. The MF Technique is used in these industrial labs to monitor the presence of microorganisms in process waters and final product.

The pharmaceutical and cosmetics industries typically focus on monitoring their process water for Pseudomonas species. The electronics industry monitors for any and all microorganisms because they must keep their process water free from even the smallest organisms. Microbial monitoring in the food and beverage industry typically employs several types of techniques because of the variety of samples that are encountered. Beverage samples can typically be monitored for microorganisms by the MF Technique, but when solid samples cannot be liquefied, alternative methods must be used.

1–36 of 66 items
  1. PTFE Membrane Filters, 0.22 um, 47mm, Nonsterile, 100 per pack, SF13856 PTFE Membrane Filters, 0.22 um, 47mm, Nonsterile, 100 per pack, SF13856

    Regular Price: $94.56

    Price $75.52

  2. MCE Membrane Filters White Membrane Black Grid, 0.22 um, 47mm, Sterile, 150 per pack, SF17000 MCE Membrane Filters White Membrane Black Grid, 0.22 um, 47mm, Sterile, 150 per pack, SF17000

    Regular Price: $69.64

    Price $60.56

  3. PTFE Membrane Filters, 0.22 um, 142mm, Nonsterile, 50 per pack, SF15130 PTFE Membrane Filters, 0.22 um, 142mm, Nonsterile, 50 per pack, SF15130

    Regular Price: $528.44

    Price $467.14

  4. MCE Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF14628 MCE Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF14628

    Regular Price: $74.48

    Price $65.84

  5. PTFE Membrane Filters, 0.22 um, 293mm, Nonsterile, 25 per pack, SF13859 PTFE Membrane Filters, 0.22 um, 293mm, Nonsterile, 25 per pack, SF13859

    Regular Price: $567.36

    Price $501.55

  6. PES Membrane Filters, 0.22 um, 293mm, Nonsterile, 50 per pack, SF18092 PES Membrane Filters, 0.22 um, 293mm, Nonsterile, 50 per pack, SF18092

    Regular Price: $464.60

    Price $404.00

  7. Nylon Membrane Filters, 0.22 um, 90mm, Nonsterile, 100 per pack, SF14532 Nylon Membrane Filters, 0.22 um, 90mm, Nonsterile, 100 per pack, SF14532

    Regular Price: $120.66

    Price $106.66

  8. Cellulose Acetate CA Membrane Filters, 0.22 um, 25mm, Nonsterile, 200 per pack, SF15096 Cellulose Acetate CA Membrane Filters, 0.22 um, 25mm, Nonsterile, 200 per pack, SF15096

    Regular Price: $65.73

    Price $58.10

  9. PES Membrane Filters, 0.22 um, 25mm, Nonsterile, 200 per pack, SF15175 PES Membrane Filters, 0.22 um, 25mm, Nonsterile, 200 per pack, SF15175

    Regular Price: $83.89

    Price $74.16

  10. PTFE Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF15124 PTFE Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF15124

    Regular Price: $121.18

    Price $107.12

  11. PVDF Membrane Filters, 0.22 um, 260mm x 300mm, Nonsterile, 50 per pack, SF17388 PVDF Membrane Filters, 0.22 um, 260mm x 300mm, Nonsterile, 50 per pack, SF17388

    Regular Price: $443.90

    Price $401.44

  12. PTFE Membrane Filters, 0.22 um, 37mm, Nonsterile, 200 per pack, SF14683 PTFE Membrane Filters, 0.22 um, 37mm, Nonsterile, 200 per pack, SF14683

    Regular Price: $127.04

    Price $112.30

  13. MCE White Membrane/Black Grid Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF14716 MCE White Membrane/Black Grid Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF14716

    Regular Price: $89.35

    Price $63.94

  14. PTFE Hydrophilic Membrane Filters, 0.22 um, 90mm, Nonsterile, 100 per pack, SF13842 PTFE Hydrophilic Membrane Filters, 0.22 um, 90mm, Nonsterile, 100 per pack, SF13842

    Regular Price: $544.16

    Price $481.04

  15. MCE Membrane Filters, 0.22 um, 25mm, Nonsterile, 200 per pack, SF14620 MCE Membrane Filters, 0.22 um, 25mm, Nonsterile, 200 per pack, SF14620

    Regular Price: $76.98

    Price $69.62

  16. PTFE Membrane Filters, 0.22 um, 260mm x 300mm, Nonsterile, 50 per pack, SF17385 PTFE Membrane Filters, 0.22 um, 260mm x 300mm, Nonsterile, 50 per pack, SF17385

    Regular Price: $422.12

    Price $359.42

  17. MCE Membrane Filters, 0.22 um, 142mm, Nonsterile, 25 per pack, SF14668 MCE Membrane Filters, 0.22 um, 142mm, Nonsterile, 25 per pack, SF14668

    Regular Price: $175.88

    Price $155.48

  18. Nylon Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF13879 Nylon Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF13879

    Regular Price: $117.19

    Price $92.56

  19. PTFE Membrane Filters, 0.22 um, 82.6mm, Nonsterile, 100 per pack, SF17162 PTFE Membrane Filters, 0.22 um, 82.6mm, Nonsterile, 100 per pack, SF17162

    Regular Price: $237.87

    Price $206.84

  20. Nylon Membrane Filters, 0.22 um, 293mm, Nonsterile, 50 per pack, SF14545 Nylon Membrane Filters, 0.22 um, 293mm, Nonsterile, 50 per pack, SF14545

    Regular Price: $562.99

    Price $497.68

  21. Cellulose Acetate CA Membrane Filters, 0.22 um, 142mm, Nonsterile, 50 per pack, SF15099 Cellulose Acetate CA Membrane Filters, 0.22 um, 142mm, Nonsterile, 50 per pack, SF15099

    Regular Price: $209.77

    Price $185.43

  22. PVDF Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF15024 PVDF Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF15024

    Regular Price: $144.69

    Price $125.82

  23. PTFE Membrane Filters, 0.22 um, 25mm, Nonsterile, 200 per pack, SF13855 PTFE Membrane Filters, 0.22 um, 25mm, Nonsterile, 200 per pack, SF13855

    Regular Price: $121.64

    Price $107.53

  24. MCE White Membrane/Black Blue Grid Membrane Filters, 0.22 um, 50mm, Sterile, 100 per pack, SF14710 MCE White Membrane/Black Blue Grid Membrane Filters, 0.22 um, 50mm, Sterile, 100 per pack, SF14710

    Regular Price: $43.54

    Price $38.49

  25. PTFE Hydrophilic Membrane Filters, 0.22 um, 47mm, Sterile, 200 per pack, SF16013 PTFE Hydrophilic Membrane Filters, 0.22 um, 47mm, Sterile, 200 per pack, SF16013

    Regular Price: $404.06

    Price $351.36

  26. MCE Membrane Filters Black Membrane White Grid, 0.22 um, 47mm, Sterile, 100 per pack, SF17002 MCE Membrane Filters Black Membrane White Grid, 0.22 um, 47mm, Sterile, 100 per pack, SF17002

    Regular Price: $69.76

    Price $60.66

  27. PTFE Hydrophilic Membrane Filters, 0.22 um, 150mm, Nonsterile, 50 per pack, SF13843 PTFE Hydrophilic Membrane Filters, 0.22 um, 150mm, Nonsterile, 50 per pack, SF13843

    Regular Price: $336.32

    Price $292.45

  28. MCE Membrane Filters, 0.22 um, 50mm, Nonsterile, 100 per pack, SF14636 MCE Membrane Filters, 0.22 um, 50mm, Nonsterile, 100 per pack, SF14636

    Regular Price: $39.22

    Price $34.67

  29. Nylon Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF13875 Nylon Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF13875

    Regular Price: $68.32

    Price $60.39

  30. MCE White Membrane/Black Grid Membrane Filters, 0.22 um, 60mm, Nonsterile, 100 per pack, SF14720 MCE White Membrane/Black Grid Membrane Filters, 0.22 um, 60mm, Nonsterile, 100 per pack, SF14720
    $34.17
  31. Nylon Membrane Filters, 0.22 um, 142mm, Nonsterile, 50 per pack, SF14538 Nylon Membrane Filters, 0.22 um, 142mm, Nonsterile, 50 per pack, SF14538

    Regular Price: $146.94

    Price $106.97

  32. Cellulose Acetate CA Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF15097 Cellulose Acetate CA Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF15097

    Regular Price: $78.95

    Price $69.79

  33. PES Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF15021 PES Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF15021

    Regular Price: $177.85

    Price $133.64

  34. PTFE Hydrophilic Membrane Filters, 0.22 um, 13mm, Nonsterile, 400 per pack, SF17921 PTFE Hydrophilic Membrane Filters, 0.22 um, 13mm, Nonsterile, 400 per pack, SF17921

    Regular Price: $309.53

    Price $269.16

  35. MCE White Membrane/Black Blue Grid Membrane Filters, 0.22 um, 25mm, Sterile, 100 per pack, SF14706 MCE White Membrane/Black Blue Grid Membrane Filters, 0.22 um, 25mm, Sterile, 100 per pack, SF14706

    Regular Price: $58.33

    Price $51.56

  36. PTFE Hydrophilic Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF13841 PTFE Hydrophilic Membrane Filters, 0.22 um, 47mm, Nonsterile, 200 per pack, SF13841

    Regular Price: $274.92

    Price $243.03

1–36 of 66 items