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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 77 items
  1. Cellulose Acetate CA Membrane Filters, 0.45 um, 13mm, Nonsterile, 200 per pack, SF15101 Cellulose Acetate CA Membrane Filters, 0.45 um, 13mm, Nonsterile, 200 per pack, SF15101

    Regular Price: $87.40

    Price $77.26

  2. Cellulose Acetate CA Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF15102 Cellulose Acetate CA Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF15102

    Regular Price: $65.73

    Price $58.10

  3. Cellulose Acetate CA Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF15103 Cellulose Acetate CA Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF15103

    Regular Price: $78.95

    Price $59.32

  4. Cellulose Acetate CA Membrane Filters, 0.45 um, 47mm, Sterile, 200 per pack, SF18015 Cellulose Acetate CA Membrane Filters, 0.45 um, 47mm, Sterile, 200 per pack, SF18015

    Regular Price: $102.33

    Price $88.98

  5. Cellulose Acetate CA Membrane Filters, 0.45 um, 90mm, Nonsterile, 100 per pack, SF15104 Cellulose Acetate CA Membrane Filters, 0.45 um, 90mm, Nonsterile, 100 per pack, SF15104

    Regular Price: $148.82

    Price $131.56

  6. 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

  7. Cellulose Acetate CA Membrane Filters, 0.45 um, 293mm, Nonsterile, 25 per pack, SF15106 Cellulose Acetate CA Membrane Filters, 0.45 um, 293mm, Nonsterile, 25 per pack, SF15106

    Regular Price: $310.52

    Price $274.50

  8. PTFE Membrane Filters, 0.45 um, 13mm, Nonsterile, 200 per pack, SF15125 PTFE Membrane Filters, 0.45 um, 13mm, Nonsterile, 200 per pack, SF15125

    Regular Price: $121.18

    Price $107.12

  9. PTFE Hydrophilic Membrane Filters, 0.45 um, 25mm, Nonsterile, 500 per pack, SF13845 PTFE Hydrophilic Membrane Filters, 0.45 um, 25mm, Nonsterile, 500 per pack, SF13845

    Regular Price: $419.00

    Price $348.66

  10. PTFE Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF13860 PTFE Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF13860

    Regular Price: $121.64

    Price $107.53

  11. PTFE Hydrophilic Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF13846 PTFE Hydrophilic Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF13846

    Regular Price: $274.92

    Price $243.03

  12. PTFE Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF13861 PTFE Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF13861

    Regular Price: $170.86

    Price $151.04

  13. PTFE Membrane Filters, 0.45 um, 50mm, Nonsterile, 100 per pack, SF14685 PTFE Membrane Filters, 0.45 um, 50mm, Nonsterile, 100 per pack, SF14685

    Regular Price: $65.44

    Price $57.84

  14. PTFE Hydrophilic Membrane Filters, 0.45 um, 90mm, Nonsterile, 50 per pack, SF13847 PTFE Hydrophilic Membrane Filters, 0.45 um, 90mm, Nonsterile, 50 per pack, SF13847

    Regular Price: $272.08

    Price $240.52

  15. PTFE Membrane Filters, 0.45 um, 90mm, Nonsterile, 50 per pack, SF13862 PTFE Membrane Filters, 0.45 um, 90mm, Nonsterile, 50 per pack, SF13862

    Regular Price: $251.64

    Price $222.46

  16. 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

  17. PTFE Hydrophilic Membrane Filters, 0.45 um, 150mm, Nonsterile, 50 per pack, SF13848 PTFE Hydrophilic Membrane Filters, 0.45 um, 150mm, Nonsterile, 50 per pack, SF13848

    Regular Price: $336.32

    Price $292.45

  18. PTFE Membrane Filters, 0.45 um, 150mm, Nonsterile, 50 per pack, SF13863 PTFE Membrane Filters, 0.45 um, 150mm, Nonsterile, 50 per pack, SF13863

    Regular Price: $528.44

    Price $467.14

  19. PTFE Membrane Filters, 0.45 um, 260mm x 300mm, Nonsterile, 50 per pack, SF17386 PTFE Membrane Filters, 0.45 um, 260mm x 300mm, Nonsterile, 50 per pack, SF17386

    Regular Price: $422.12

    Price $359.42

  20. PTFE Hydrophilic Membrane Filters, 0.45 um, 260mm x 300mm, Nonsterile, 50 per pack, SF17472 PTFE Hydrophilic Membrane Filters, 0.45 um, 260mm x 300mm, Nonsterile, 50 per pack, SF17472

    Regular Price: $494.60

    Price $448.10

  21. PTFE Membrane Filters, 0.45 um, 8 inch x 10 inch, Nonsterile, 20 per pack, SPEC17048 PTFE Membrane Filters, 0.45 um, 8 inch x 10 inch, Nonsterile, 20 per pack, SPEC17048

    Regular Price: $227.95

    Price $198.22

  22. PTFE Hydrophilic Membrane Filters, 0.45 um, 293mm, Nonsterile, 25 per pack, SF13849 PTFE Hydrophilic Membrane Filters, 0.45 um, 293mm, Nonsterile, 25 per pack, SF13849

    Regular Price: $567.36

    Price $501.55

  23. PTFE Membrane Filters, 0.45 um, 293mm, Nonsterile, 25 per pack, SF13864 PTFE Membrane Filters, 0.45 um, 293mm, Nonsterile, 25 per pack, SF13864

    Regular Price: $567.36

    Price $501.55

  24. Nylon Membrane Filters, 0.45 um, 13mm, Nonsterile, 200 per pack, SF13876 Nylon Membrane Filters, 0.45 um, 13mm, Nonsterile, 200 per pack, SF13876

    Regular Price: $69.45

    Price $60.39

  25. Nylon Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF13878 Nylon Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF13878

    Regular Price: $81.87

    Price $72.37

  26. Nylon Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF13880 Nylon Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF13880

    Regular Price: $117.19

    Price $87.52

  27. Nylon Membrane Filters, 0.45 um, 47mm, Sterile, 200 per pack, SF18013 Nylon Membrane Filters, 0.45 um, 47mm, Sterile, 200 per pack, SF18013

    Regular Price: $150.97

    Price $131.28

  28. Nylon Membrane Filters, 0.45 um, 90mm, Nonsterile, 100 per pack, SF14533 Nylon Membrane Filters, 0.45 um, 90mm, Nonsterile, 100 per pack, SF14533

    Regular Price: $120.66

    Price $106.66

  29. 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

  30. Nylon Membrane Filters, 0.45 um, 150mm, Nonsterile, 50 per pack, SF13884 Nylon Membrane Filters, 0.45 um, 150mm, Nonsterile, 50 per pack, SF13884

    Regular Price: $123.12

    Price $108.84

  31. Nylon Membrane Filters, 0.45 um, 293mm, Nonsterile, 50 per pack, SF14546 Nylon Membrane Filters, 0.45 um, 293mm, Nonsterile, 50 per pack, SF14546

    Regular Price: $562.99

    Price $497.68

  32. PES Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF15176 PES Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF15176

    Regular Price: $83.89

    Price $74.16

  33. PES Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF15022 PES Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF15022

    Regular Price: $177.85

    Price $157.78

  34. Polypropylene Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF14552 Polypropylene Membrane Filters, 0.45 um, 25mm, Nonsterile, 200 per pack, SF14552

    Regular Price: $48.15

    Price $41.87

  35. Polypropylene Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF14554 Polypropylene Membrane Filters, 0.45 um, 47mm, Nonsterile, 200 per pack, SF14554

    Regular Price: $95.27

    Price $84.22

  36. Polypropylene Membrane Filters, 0.45 um, 90mm, Nonsterile, 100 per pack, SF14556 Polypropylene Membrane Filters, 0.45 um, 90mm, Nonsterile, 100 per pack, SF14556

    Regular Price: $116.50

    Price $102.99

1–36 of 77 items