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Rest assured that we are currently maintaining a staff of people to accept and ship your orders on time. Please feel free to contact us at 513-467-0222 with any concerns or questions.

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 38 items
  1. MCE White Membrane/Black Grid Membrane Filters, 0.80 um, 47mm, Nonsterile, 100 per pack, SF15251 MCE White Membrane/Black Grid Membrane Filters, 0.80 um, 47mm, Nonsterile, 100 per pack, SF15251

    Regular Price: $36.16

    Price $31.97

  2. MCE Membrane Filters, 0.80 um, 50mm, Nonsterile, 100 per pack, SF14639 MCE Membrane Filters, 0.80 um, 50mm, Nonsterile, 100 per pack, SF14639

    Regular Price: $39.22

    Price $34.67

  3. MCE Membrane Filters, 0.80 um, 60mm, Nonsterile, 100 per pack, SF14647 MCE Membrane Filters, 0.80 um, 60mm, Nonsterile, 100 per pack, SF14647
    $97.06
  4. 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

  5. Nylon Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF14527 Nylon Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF14527

    Regular Price: $117.19

    Price $103.59

  6. Polypropylene Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF14866 Polypropylene Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF14866

    Regular Price: $100.00

    Price $88.40

  7. MCE Black Membrane/White Grid Membrane Filters, 0.80 um, 47mm, Sterile, 200 per pack, SF17166 MCE Black Membrane/White Grid Membrane Filters, 0.80 um, 47mm, Sterile, 200 per pack, SF17166

    Regular Price: $148.75

    Price $123.76

  8. MCE Membrane Filters, 0.80 um, 37mm, Nonsterile, 200 per pack, SF15139 MCE Membrane Filters, 0.80 um, 37mm, Nonsterile, 200 per pack, SF15139

    Regular Price: $71.28

    Price $63.01

  9. MCE Membrane Filters, 0.80 um, 293mm, Nonsterile, 25 per pack, SF14679 MCE Membrane Filters, 0.80 um, 293mm, Nonsterile, 25 per pack, SF14679

    Regular Price: $284.12

    Price $251.16

  10. 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

  11. Nylon Membrane Filters, 0.80 um, 13mm, Nonsterile, 200 per pack, SF14513 Nylon Membrane Filters, 0.80 um, 13mm, Nonsterile, 200 per pack, SF14513

    Regular Price: $79.94

    Price $70.67

  12. Nylon Membrane Filters, 0.80 um, 293mm, Nonsterile, 50 per pack, SF14547 Nylon Membrane Filters, 0.80 um, 293mm, Nonsterile, 50 per pack, SF14547

    Regular Price: $562.99

    Price $497.68

  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. MCE Membrane Filters, 0.80 um, 13mm, Nonsterile, 200 per pack, SF14615 MCE Membrane Filters, 0.80 um, 13mm, Nonsterile, 200 per pack, SF14615

    Regular Price: $67.48

    Price $59.65

  15. MCE Membrane Filters, 0.80 um, 90mm, Nonsterile, 50 per pack, SF14655 MCE Membrane Filters, 0.80 um, 90mm, Nonsterile, 50 per pack, SF14655

    Regular Price: $178.58

    Price $157.86

  16. 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

  17. 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

  18. 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

  19. MCE White Membrane/Black Grid Membrane Filters, 0.80 um, 25mm, Nonsterile, 100 per pack, SF18051 MCE White Membrane/Black Grid Membrane Filters, 0.80 um, 25mm, Nonsterile, 100 per pack, SF18051

    Regular Price: $43.12

    Price $39.00

  20. MCE Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF14631 MCE Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF14631

    Regular Price: $79.52

    Price $70.29

  21. PES Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF18090 PES Membrane Filters, 0.80 um, 47mm, Nonsterile, 200 per pack, SF18090

    Regular Price: $177.85

    Price $157.78

  22. 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

  23. Nylon Membrane Filters, 0.80 um, 25mm, Nonsterile, 200 per pack, SF14520 Nylon Membrane Filters, 0.80 um, 25mm, Nonsterile, 200 per pack, SF14520

    Regular Price: $86.78

    Price $76.71

  24. Polypropylene Membrane Filters, 0.80 um, 25mm, Nonsterile, 200 per pack, SF14852 Polypropylene Membrane Filters, 0.80 um, 25mm, Nonsterile, 200 per pack, SF14852

    Regular Price: $48.15

    Price $41.87

  25. Polypropylene Membrane Filters, 0.80 um, 293mm, Nonsterile, 25 per pack, SF14896 Polypropylene Membrane Filters, 0.80 um, 293mm, Nonsterile, 25 per pack, SF14896

    Regular Price: $207.02

    Price $183.01

  26. MCE Membrane Filters, 0.80 um, 25mm, Nonsterile, 200 per pack, SF14623 MCE Membrane Filters, 0.80 um, 25mm, Nonsterile, 200 per pack, SF14623

    Regular Price: $76.98

    Price $69.62

  27. 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

  28. 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

  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. 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

  31. Polypropylene Membrane Filters, 0.80 um, 125mm, Nonsterile, 25 per pack, SF14880 Polypropylene Membrane Filters, 0.80 um, 125mm, Nonsterile, 25 per pack, SF14880

    Regular Price: $81.54

    Price $72.08

  32. MCE White Membrane/Black Grid Membrane Filters, 0.80 um, 47mm, Sterile, 100 per pack, SF18161 MCE White Membrane/Black Grid Membrane Filters, 0.80 um, 47mm, Sterile, 100 per pack, SF18161

    Regular Price: $55.09

    Price $47.96

  33. MCE White Membrane/Black Grid Membrane Filters, 0.8 um, 50mm, Nonsterile, 100 per pack, SF18148 MCE White Membrane/Black Grid Membrane Filters, 0.8 um, 50mm, Nonsterile, 100 per pack, SF18148

    Regular Price: $55.15

    Price $47.96

  34. MCE White Membrane/Green Grid Membrane Filters, 0.8 um, 25mm, Nonsterile, 100 per pack, SF18131 MCE White Membrane/Green Grid Membrane Filters, 0.8 um, 25mm, Nonsterile, 100 per pack, SF18131
    $51.56
  35. MCE White Membrane/Black Grid Membrane Filters, 0.80 um, 47mm, Sterile, with pads, 100 per pack, SF18162 MCE White Membrane/Black Grid Membrane Filters, 0.80 um, 47mm, Sterile, with pads, 100 per pack, SF18162

    Regular Price: $60.67

    Price $55.15

  36. MCE Membrane Filters, 0.80 um, 100mm, Nonsterile, 100 per pack, SF18152 MCE Membrane Filters, 0.80 um, 100mm, Nonsterile, 100 per pack, SF18152

    Regular Price: $363.08

    Price $315.72

1–36 of 38 items