Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.

We are actively responding to COVID-19 and assembling viral testing kits. See our updated policies.

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 44 items
  1. Polypropylene Membrane Filters, 1.0 um, 90mm, Nonsterile, 100 per pack, SF14873 Polypropylene Membrane Filters, 1.0 um, 90mm, Nonsterile, 100 per pack, SF14873

    Regular Price: $123.49

    Price $109.17

  2. PVDF Membrane Filters, 0.45 um, 90mm, Nonsterile, 100 per pack, SF18031 PVDF Membrane Filters, 0.45 um, 90mm, Nonsterile, 100 per pack, SF18031

    Regular Price: $143.73

    Price $124.98

  3. MCE Membrane Filters, 1.20 um, 90mm, Nonsterile, 50 per pack, SF14656 MCE Membrane Filters, 1.20 um, 90mm, Nonsterile, 50 per pack, SF14656

    Regular Price: $95.86

    Price $84.74

  4. Cellulose Acetate CA Membrane Filters, 0.22 um, 90mm, Nonsterile, 100 per pack, SF15098 Cellulose Acetate CA Membrane Filters, 0.22 um, 90mm, Nonsterile, 100 per pack, SF15098

    Regular Price: $148.82

    Price $131.56

  5. Nylon Membrane Filter, 10.00 um, 90mm 100/pk, SF18096 Nylon Membrane Filter, 10.00 um, 90mm 100/pk, SF18096

    Regular Price: $147.17

    Price $127.98

  6. 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

  7. PTFE Membrane Filters, 0.10 um, 90mm, Nonsterile, 50 per pack, SF15121 PTFE Membrane Filters, 0.10 um, 90mm, Nonsterile, 50 per pack, SF15121

    Regular Price: $269.91

    Price $238.61

  8. Nylon Membrane Filters, 1.0 um, 90mm, Nonsterile, 100 per pack, SF14534 Nylon Membrane Filters, 1.0 um, 90mm, Nonsterile, 100 per pack, SF14534

    Regular Price: $144.78

    Price $127.98

  9. 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

  10. Polypropylene Membrane Filters, 5.00 um, 90mm, Nonsterile, 100 per pack, SF14877 Polypropylene Membrane Filters, 5.00 um, 90mm, Nonsterile, 100 per pack, SF14877

    Regular Price: $173.84

    Price $153.67

  11. MCE Membrane Filters, 0.65 um, 90mm, Nonsterile, 50 per pack, SF14654 MCE Membrane Filters, 0.65 um, 90mm, Nonsterile, 50 per pack, SF14654

    Regular Price: $95.86

    Price $84.74

  12. Polypropylene Membrane Filters, 0.10 um, 90mm, Nonsterile, 25 per pack, SF18057 Polypropylene Membrane Filters, 0.10 um, 90mm, Nonsterile, 25 per pack, SF18057
    $58.18
  13. Cellulose Acetate CA Membrane Filters, 3.00 um, 90mm, Nonsterile, 100 per pack, SF15116 Cellulose Acetate CA Membrane Filters, 3.00 um, 90mm, Nonsterile, 100 per pack, SF15116

    Regular Price: $178.58

    Price $157.86

  14. PTFE Membrane Filters, 1.0 um, 90mm, Nonsterile, 100 per pack, SF13867 PTFE Membrane Filters, 1.0 um, 90mm, Nonsterile, 100 per pack, SF13867

    Regular Price: $539.82

    Price $477.22

  15. 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

  16. Nylon Membrane Filters, 0.80 um, 90mm, Nonsterile, 100 per pack, SF14557 Nylon Membrane Filters, 0.80 um, 90mm, Nonsterile, 100 per pack, SF14557

    Regular Price: $144.78

    Price $127.98

  17. Polypropylene Membrane Filters, 1.20 um, 90mm, Nonsterile, 100 per pack, SF14874 Polypropylene Membrane Filters, 1.20 um, 90mm, Nonsterile, 100 per pack, SF14874

    Regular Price: $173.84

    Price $153.67

  18. MCE Membrane Filters, 0.22 um, 90mm, Nonsterile, 50 per pack, SF14652 MCE Membrane Filters, 0.22 um, 90mm, Nonsterile, 50 per pack, SF14652

    Regular Price: $148.82

    Price $131.56

  19. MCE Membrane Filters, 3.00 um, 90mm, Nonsterile, 50 per pack, SF14657 MCE Membrane Filters, 3.00 um, 90mm, Nonsterile, 50 per pack, SF14657

    Regular Price: $178.58

    Price $157.86

  20. 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

  21. PTFE Hydrophilic Membrane Filters, 1.0 um, 90mm, Nonsterile, 100 per pack, SF13852 PTFE Hydrophilic Membrane Filters, 1.0 um, 90mm, Nonsterile, 100 per pack, SF13852

    Regular Price: $510.00

    Price $435.34

  22. PTFE Membrane Filters, 0.22 um, 90mm, Nonsterile, 50 per pack, SF13857 PTFE Membrane Filters, 0.22 um, 90mm, Nonsterile, 50 per pack, SF13857

    Regular Price: $173.27

    Price $150.67

  23. Nylon Membrane Filters, 3.00 um, 90mm, Nonsterile, 100 per pack, SF14535 Nylon Membrane Filters, 3.00 um, 90mm, Nonsterile, 100 per pack, SF14535

    Regular Price: $144.78

    Price $127.98

  24. Polypropylene Membrane Filters, 0.80 um, 90mm, Nonsterile, 100 per pack, SF14872 Polypropylene Membrane Filters, 0.80 um, 90mm, Nonsterile, 100 per pack, SF14872

    Regular Price: $123.49

    Price $109.17

  25. PVDF Membrane Filters, 0.22 um, 90mm, Nonsterile, 100 per pack, SF18030 PVDF Membrane Filters, 0.22 um, 90mm, Nonsterile, 100 per pack, SF18030

    Regular Price: $143.73

    Price $124.98

  26. MCE Membrane Filters, 0.80 um, 90mm, Nonsterile, 100 per pack, SF14655 MCE Membrane Filters, 0.80 um, 90mm, Nonsterile, 100 per pack, SF14655

    Regular Price: $178.58

    Price $157.86

  27. Cellulose Acetate CA Membrane Filter, 5 um, 90mm, Nonsterile, 100 per pack, SF18095 Cellulose Acetate CA Membrane Filter, 5 um, 90mm, Nonsterile, 100 per pack, SF18095

    Regular Price: $181.53

    Price $157.86

  28. 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

  29. PTFE Membrane Filters, 5.00 um, 90mm, Nonsterile, 50 per pack, SF13872 PTFE Membrane Filters, 5.00 um, 90mm, Nonsterile, 50 per pack, SF13872

    Regular Price: $216.15

    Price $187.96

  30. 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

  31. Polypropylene Membrane Filters, 0.20 um, 90mm, Nonsterile, 100 per pack, SF14555 Polypropylene Membrane Filters, 0.20 um, 90mm, Nonsterile, 100 per pack, SF14555

    Regular Price: $116.50

    Price $102.99

  32. Polypropylene Membrane Filters, 3.00 um, 90mm, Nonsterile, 100 per pack, SF14876 Polypropylene Membrane Filters, 3.00 um, 90mm, Nonsterile, 100 per pack, SF14876

    Regular Price: $164.00

    Price $144.98

  33. MCE Membrane Filters, 0.45 um, 90mm, Nonsterile, 50 per pack, SF14653 MCE Membrane Filters, 0.45 um, 90mm, Nonsterile, 50 per pack, SF14653

    Regular Price: $148.82

    Price $131.56

  34. MCE Membrane Filters, 5.00 um, 90mm, Nonsterile, 50 per pack, SF14658 MCE Membrane Filters, 5.00 um, 90mm, Nonsterile, 50 per pack, SF14658

    Regular Price: $178.58

    Price $157.86

  35. Cellulose Acetate CA Membrane Filters, 0.80 um, 90mm, Nonsterile, 100 per pack, SF15110 Cellulose Acetate CA Membrane Filters, 0.80 um, 90mm, Nonsterile, 100 per pack, SF15110

    Regular Price: $178.58

    Price $157.86

  36. 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

1–36 of 44 items