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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 384 items
  1. Polypropylene Membrane Filters, 3.00 um, 82.6mm, Nonsterile, 50 per pack, SF18006 Polypropylene Membrane Filters, 3.00 um, 82.6mm, Nonsterile, 50 per pack, SF18006

    Regular Price: $237.99

    Price $206.95

  2. PTFE Membrane Filters, 1.0 um, 82.6mm, Nonsterile, 50 per pack, SF16015 PTFE Membrane Filters, 1.0 um, 82.6mm, Nonsterile, 50 per pack, SF16015

    Regular Price: $237.99

    Price $206.95

  3. 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

  4. PTFE PM2.5 Air Monitoring Membrane Filter, 46.2mm with support ring, 2.0 um, 50 per pack, SF18040 PTFE PM2.5 Air Monitoring Membrane Filter, 46.2mm with support ring, 2.0 um, 50 per pack, SF18040

    Regular Price: $454.25

    Price $336.00

    As low as: $252.00
  5. PTFE Membrane Filter, 55mm, Hydrophobic, 1.0 um, Used with EPA Method OTM 28 (Method 5 with 202), 50 per pack, SF17940 PTFE Membrane Filter, 55mm, Hydrophobic, 1.0 um, Used with EPA Method OTM 28 (Method 5 with 202), 50 per pack, SF17940

    Regular Price: $223.60

    Price $179.50

  6. Cellulose Acetate CA Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF15095 Cellulose Acetate CA Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF15095

    Regular Price: $87.40

    Price $77.26

  7. 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

  8. Cellulose Acetate CA Membrane Filters, 0.80 um, 13mm, Nonsterile, 200 per pack, SF15107 Cellulose Acetate CA Membrane Filters, 0.80 um, 13mm, Nonsterile, 200 per pack, SF15107

    Regular Price: $87.40

    Price $77.26

  9. Cellulose Acetate CA Membrane Filters, 3.00 um, 13mm, Nonsterile, 200 per pack, SF15113 Cellulose Acetate CA Membrane Filters, 3.00 um, 13mm, Nonsterile, 200 per pack, SF15113

    Regular Price: $87.40

    Price $77.26

  10. 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

  11. 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

  12. Cellulose Acetate CA Membrane Filters, 0.80 um, 25mm, Nonsterile, 200 per pack, SF15108 Cellulose Acetate CA Membrane Filters, 0.80 um, 25mm, Nonsterile, 200 per pack, SF15108

    Regular Price: $67.82

    Price $59.96

  13. Cellulose Acetate CA Membrane Filters, 3.00 um, 25mm, Nonsterile, 200 per pack, SF15114 Cellulose Acetate CA Membrane Filters, 3.00 um, 25mm, Nonsterile, 200 per pack, SF15114

    Regular Price: $67.82

    Price $59.96

  14. 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

  15. 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

  16. Cellulose Acetate CA Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF15109 Cellulose Acetate CA Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF15109

    Regular Price: $86.23

    Price $69.79

  17. Cellulose Acetate CA Membrane Filters, 3.00 um, 47mm, Nonsterile, 200 per pack, SF15115 Cellulose Acetate CA Membrane Filters, 3.00 um, 47mm, Nonsterile, 200 per pack, SF15115

    Regular Price: $78.95

    Price $69.79

  18. 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

  19. 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

  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. 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

  22. 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

  23. 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

  24. 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

  25. 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

  26. 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

  27. Cellulose Acetate CA Membrane Filters, 0.22 um, 293mm, Nonsterile, 25 per pack, SF15100 Cellulose Acetate CA Membrane Filters, 0.22 um, 293mm, Nonsterile, 25 per pack, SF15100

    Regular Price: $310.52

    Price $274.50

  28. 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

  29. Cellulose Acetate CA Membrane Filters, 0.80 um, 293mm, Nonsterile, 25 per pack, SF15112 Cellulose Acetate CA Membrane Filters, 0.80 um, 293mm, Nonsterile, 25 per pack, SF15112

    Regular Price: $310.52

    Price $274.50

  30. Cellulose Acetate CA Membrane Filters, 3.00 um, 293mm, Nonsterile, 25 per pack, SF15118 Cellulose Acetate CA Membrane Filters, 3.00 um, 293mm, Nonsterile, 25 per pack, SF15118

    Regular Price: $310.52

    Price $274.50

  31. PTFE Membrane Filters, 0.10 um, 13mm, Nonsterile, 200 per pack, SF15123 PTFE Membrane Filters, 0.10 um, 13mm, Nonsterile, 200 per pack, SF15123

    Regular Price: $145.42

    Price $128.55

  32. 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

  33. 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

  34. PTFE Membrane Filters, 1.0 um, 13mm, Nonsterile, 200 per pack, SF15126 PTFE Membrane Filters, 1.0 um, 13mm, Nonsterile, 200 per pack, SF15126

    Regular Price: $145.42

    Price $128.55

  35. PTFE Membrane Filters, 3.00 um, 13mm, Nonsterile, 200 per pack, SF15127 PTFE Membrane Filters, 3.00 um, 13mm, Nonsterile, 200 per pack, SF15127

    Regular Price: $145.42

    Price $128.55

  36. PTFE Membrane Filters, 5.00 um, 13mm, Nonsterile, 200 per pack, SF15128 PTFE Membrane Filters, 5.00 um, 13mm, Nonsterile, 200 per pack, SF15128

    Regular Price: $86.39

    Price $76.37

1–36 of 384 items