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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.

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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 39 items
  1. 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

  2. MCE Membrane Filters, 1.20 um, 142mm, Nonsterile, 25 per pack, SF14672 MCE Membrane Filters, 1.20 um, 142mm, Nonsterile, 25 per pack, SF14672

    Regular Price: $113.32

    Price $100.17

  3. PTFE Membrane Filters, 0.45 um, 142mm, Nonsterile, 50 per pack, SF15131 PTFE Membrane Filters, 0.45 um, 142mm, Nonsterile, 50 per pack, SF15131

    Regular Price: $528.44

    Price $467.14

  4. 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

  5. Nylon Membrane Filters, 5.00 um, 142mm, Nonsterile, 50 per pack, SF14543 Nylon Membrane Filters, 5.00 um, 142mm, Nonsterile, 50 per pack, SF14543

    Regular Price: $171.76

    Price $125.04

  6. Polypropylene Membrane Filters, 1.20 um, 142mm, Nonsterile, 25 per pack, SF14890 Polypropylene Membrane Filters, 1.20 um, 142mm, Nonsterile, 25 per pack, SF14890

    Regular Price: $86.76

    Price $76.70

  7. PVDF Membrane Filters, 0.45 um, 142mm, Nonsterile, 50 per pack, SF16725 PVDF Membrane Filters, 0.45 um, 142mm, Nonsterile, 50 per pack, SF16725

    Regular Price: $209.89

    Price $189.81

  8. MCE Membrane Filters, 0.65 um, 142mm, Nonsterile, 25 per pack, SF14670 MCE Membrane Filters, 0.65 um, 142mm, Nonsterile, 25 per pack, SF14670

    Regular Price: $113.32

    Price $100.17

  9. Cellulose Acetate CA Membrane Filters, 3.00 um, 142mm, Nonsterile, 50 per pack, SF15117 Cellulose Acetate CA Membrane Filters, 3.00 um, 142mm, Nonsterile, 50 per pack, SF15117

    Regular Price: $212.98

    Price $188.27

  10. PTFE Membrane Filters, 0.10 um, 142mm, Nonsterile, 25 per pack, SF18063 PTFE Membrane Filters, 0.10 um, 142mm, Nonsterile, 25 per pack, SF18063
    $291.96
  11. PTFE Membrane Filters, 5.00 um, 142mm, Nonsterile, 50 per pack, SF15134 PTFE Membrane Filters, 5.00 um, 142mm, Nonsterile, 50 per pack, SF15134

    Regular Price: $583.19

    Price $485.21

  12. Nylon Membrane Filters, 1.0 um, 142mm, Nonsterile, 50 per pack, SF14541 Nylon Membrane Filters, 1.0 um, 142mm, Nonsterile, 50 per pack, SF14541

    Regular Price: $171.76

    Price $125.04

  13. Polypropylene Membrane Filters, 0.80 um, 142mm, Nonsterile, 25 per pack, SF14888 Polypropylene Membrane Filters, 0.80 um, 142mm, Nonsterile, 25 per pack, SF14888

    Regular Price: $86.76

    Price $76.70

  14. Polypropylene Membrane Filters, 10.0 um, 142mm, Nonsterile, 50 per pack, SF16007 Polypropylene Membrane Filters, 10.0 um, 142mm, Nonsterile, 50 per pack, SF16007

    Regular Price: $174.00

    Price $151.30

  15. 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

  16. Cellulose Acetate CA Membrane Filters, 0.45 um, 142mm, Nonsterile, 50 per pack, SF15105 Cellulose Acetate CA Membrane Filters, 0.45 um, 142mm, Nonsterile, 50 per pack, SF15105

    Regular Price: $209.77

    Price $185.43

  17. MCE Membrane Filters, 3.00 um, 142mm, Nonsterile, 25 per pack, SF14673 MCE Membrane Filters, 3.00 um, 142mm, Nonsterile, 25 per pack, SF14673

    Regular Price: $193.50

    Price $171.06

  18. PTFE Membrane Filters, 1.0 um, 142mm, Nonsterile, 50 per pack, SF15132 PTFE Membrane Filters, 1.0 um, 142mm, Nonsterile, 50 per pack, SF15132

    Regular Price: $548.88

    Price $485.21

  19. Track-etched polycarbonate Membrane Filters, 8.0 um, 142mm, Nonsterile, 100 per pack, SF18191 Track-etched polycarbonate Membrane Filters, 8.0 um, 142mm, Nonsterile, 100 per pack, SF18191

    Regular Price: $1,030.40

    Price $896.00

  20. Nylon Membrane Filters, 0.45 um, 142mm, Nonsterile, 50 per pack, SF14539 Nylon Membrane Filters, 0.45 um, 142mm, Nonsterile, 50 per pack, SF14539

    Regular Price: $146.94

    Price $106.97

  21. Polypropylene Membrane Filters, 0.20 um, 142mm, Nonsterile, 25 per pack, SF14886 Polypropylene Membrane Filters, 0.20 um, 142mm, Nonsterile, 25 per pack, SF14886

    Regular Price: $85.58

    Price $75.65

  22. Polypropylene Membrane Filters, 3.00 um, 142mm, Nonsterile, 25 per pack, SF14892 Polypropylene Membrane Filters, 3.00 um, 142mm, Nonsterile, 25 per pack, SF14892

    Regular Price: $85.58

    Price $75.65

  23. Track-etched polycarbonate Membrane Filters, 0.20 um, 142mm, Nonsterile, 100 per pack, SF17158 Track-etched polycarbonate Membrane Filters, 0.20 um, 142mm, Nonsterile, 100 per pack, SF17158

    Regular Price: $1,030.40

    Price $896.00

  24. MCE Membrane Filters, 0.80 um, 142mm, Nonsterile, 25 per pack, SF14671 MCE Membrane Filters, 0.80 um, 142mm, Nonsterile, 25 per pack, SF14671

    Regular Price: $193.50

    Price $171.06

  25. 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

  26. Polypropylene Membrane Filters, 0.10 um, 142mm, Nonsterile, 25 per pack, SF18058 Polypropylene Membrane Filters, 0.10 um, 142mm, Nonsterile, 25 per pack, SF18058
    $85.48
  27. Nylon Membrane Filters, 0.10 um, 142mm, Nonsterile, 50 per pack, SF14537 Nylon Membrane Filters, 0.10 um, 142mm, Nonsterile, 50 per pack, SF14537

    Regular Price: $171.76

    Price $125.04

  28. Nylon Membrane Filters, 3.00 um, 142mm, Nonsterile, 50 per pack, SF14542 Nylon Membrane Filters, 3.00 um, 142mm, Nonsterile, 50 per pack, SF14542

    Regular Price: $171.76

    Price $125.04

  29. Polypropylene Membrane Filters, 1.0 um, 142mm, Nonsterile, 50 per pack, SF14889 Polypropylene Membrane Filters, 1.0 um, 142mm, Nonsterile, 50 per pack, SF14889

    Regular Price: $176.41

    Price $153.40

  30. PVDF Membrane Filters, 0.22 um, 142mm, Nonsterile, 50 per pack, SF16718 PVDF Membrane Filters, 0.22 um, 142mm, Nonsterile, 50 per pack, SF16718

    Regular Price: $209.89

    Price $189.81

  31. MCE Membrane Filters, 0.45 um, 142mm, Nonsterile, 25 per pack, SF14669 MCE Membrane Filters, 0.45 um, 142mm, Nonsterile, 25 per pack, SF14669

    Regular Price: $175.88

    Price $155.48

  32. Cellulose Acetate CA Membrane Filters, 0.80 um, 142mm, Nonsterile, 50 per pack, SF15111 Cellulose Acetate CA Membrane Filters, 0.80 um, 142mm, Nonsterile, 50 per pack, SF15111

    Regular Price: $212.98

    Price $188.27

  33. MCE Membrane Filters, 5.00 um, 142mm, Nonsterile, 25 per pack, SF14674 MCE Membrane Filters, 5.00 um, 142mm, Nonsterile, 25 per pack, SF14674

    Regular Price: $193.50

    Price $171.06

  34. PTFE Membrane Filters, 3.00 um, 142mm, Nonsterile, 50 per pack, SF15133 PTFE Membrane Filters, 3.00 um, 142mm, Nonsterile, 50 per pack, SF15133

    Regular Price: $548.88

    Price $485.21

  35. Nylon Membrane Filters, 0.80 um, 142mm, Nonsterile, 50 per pack, SF14540 Nylon Membrane Filters, 0.80 um, 142mm, Nonsterile, 50 per pack, SF14540

    Regular Price: $171.76

    Price $125.04

  36. Polypropylene Membrane Filters, 0.45 um, 142mm, Nonsterile, 25 per pack, SF14887 Polypropylene Membrane Filters, 0.45 um, 142mm, Nonsterile, 25 per pack, SF14887

    Regular Price: $85.58

    Price $75.65

1–36 of 39 items