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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 41 items
  1. 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

  2. PTFE Membrane Filters, 5.00 um, 25mm, Nonsterile, 200 per pack, SF13870 PTFE Membrane Filters, 5.00 um, 25mm, Nonsterile, 200 per pack, SF13870

    Regular Price: $107.28

    Price $94.84

  3. 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

  4. Nylon Membrane Filters, 5.00 um, 90mm, Nonsterile, 100 per pack, SF14536 Nylon Membrane Filters, 5.00 um, 90mm, Nonsterile, 100 per pack, SF14536

    Regular Price: $144.78

    Price $127.98

  5. Polypropylene Membrane Filters, 5.00 um, 47mm, Nonsterile, 200 per pack, SF14871 Polypropylene Membrane Filters, 5.00 um, 47mm, Nonsterile, 200 per pack, SF14871

    Regular Price: $173.84

    Price $144.98

  6. MCE White Membrane/Black Blue Grid Membrane Filters, 5.00 um, 47mm, Sterile, 100 per pack, SF14757 MCE White Membrane/Black Blue Grid Membrane Filters, 5.00 um, 47mm, Sterile, 100 per pack, SF14757

    Regular Price: $95.86

    Price $84.74

  7. MCE Membrane Filters, 5.00 um, 50mm, Nonsterile, 200 per pack, SF14642 MCE Membrane Filters, 5.00 um, 50mm, Nonsterile, 200 per pack, SF14642

    Regular Price: $83.35

    Price $69.35

  8. 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

  9. PTFE Membrane Filters, 5.00 um, 50mm, Nonsterile, 100 per pack, SF14687 PTFE Membrane Filters, 5.00 um, 50mm, Nonsterile, 100 per pack, SF14687

    Regular Price: $157.31

    Price $139.06

  10. Nylon Membrane Filters, 5.00 um, 25mm, Nonsterile, 200 per pack, SF14523 Nylon Membrane Filters, 5.00 um, 25mm, Nonsterile, 200 per pack, SF14523

    Regular Price: $86.78

    Price $76.71

  11. Nylon Membrane Filters, 5.00 um, 293mm, Nonsterile, 25 per pack, SF14550 Nylon Membrane Filters, 5.00 um, 293mm, Nonsterile, 25 per pack, SF14550

    Regular Price: $286.17

    Price $248.84

  12. Polypropylene Membrane Filters, 5.00 um, 142mm, Nonsterile, 25 per pack, SF14893 Polypropylene Membrane Filters, 5.00 um, 142mm, Nonsterile, 25 per pack, SF14893

    Regular Price: $86.76

    Price $76.70

  13. MCE Membrane Filters, 5.00 um, 37mm, Nonsterile, 200 per pack, SF15142 MCE Membrane Filters, 5.00 um, 37mm, Nonsterile, 200 per pack, SF15142

    Regular Price: $71.28

    Price $63.01

  14. MCE Membrane Filters, 5.00 um, 293mm, Nonsterile, 25 per pack, SF14682 MCE Membrane Filters, 5.00 um, 293mm, Nonsterile, 25 per pack, SF14682

    Regular Price: $284.12

    Price $251.16

  15. PTFE Membrane Filters, 5.00 um, 37mm, Nonsterile, 100 per pack, SF17382 PTFE Membrane Filters, 5.00 um, 37mm, Nonsterile, 100 per pack, SF17382

    Regular Price: $80.97

    Price $67.37

  16. PTFE Membrane Filters, 5.00 um, 150mm, Nonsterile, 50 per pack, SF13873 PTFE Membrane Filters, 5.00 um, 150mm, Nonsterile, 50 per pack, SF13873

    Regular Price: $336.32

    Price $292.45

  17. 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

  18. 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

  19. MCE Membrane Filters, 5.00 um, 13mm, Nonsterile, 200 per pack, SF14618 MCE Membrane Filters, 5.00 um, 13mm, Nonsterile, 200 per pack, SF14618

    Regular Price: $67.48

    Price $59.65

  20. 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

  21. 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

  22. 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

  23. Nylon Membrane Filters, 5.00 um, 47mm, Nonsterile, 200 per pack, SF14530 Nylon Membrane Filters, 5.00 um, 47mm, Nonsterile, 200 per pack, SF14530

    Regular Price: $117.19

    Price $103.59

  24. Polypropylene Membrane Filters, 5.00 um, 25mm, Nonsterile, 200 per pack, SF14857 Polypropylene Membrane Filters, 5.00 um, 25mm, Nonsterile, 200 per pack, SF14857

    Regular Price: $48.15

    Price $41.87

  25. Polypropylene Membrane Filters, 5.00 um, 293mm, Nonsterile, 25 per pack, SF14901 Polypropylene Membrane Filters, 5.00 um, 293mm, Nonsterile, 25 per pack, SF14901

    Regular Price: $158.84

    Price $138.12

  26. MCE Membrane Filters, 5.00 um, 47mm, Nonsterile, 200 per pack, SF14634 MCE Membrane Filters, 5.00 um, 47mm, Nonsterile, 200 per pack, SF14634

    Regular Price: $79.52

    Price $70.29

  27. MCE Membrane Filters, 5.00 um, 60mm, Nonsterile, 100 per pack, SF14650 MCE Membrane Filters, 5.00 um, 60mm, Nonsterile, 100 per pack, SF14650
    $97.06
  28. PTFE Membrane Filters, 5.00 um, 47mm, Nonsterile, 100 per pack, SF13871 PTFE Membrane Filters, 5.00 um, 47mm, Nonsterile, 100 per pack, SF13871

    Regular Price: $108.75

    Price $90.64

    As low as: $77.04
  29. Nylon Membrane Filters, 5.00 um, 13mm, Nonsterile, 200 per pack, SF14516 Nylon Membrane Filters, 5.00 um, 13mm, Nonsterile, 200 per pack, SF14516

    Regular Price: $79.94

    Price $70.67

  30. Nylon Membrane Filters, 5.00 um, 150mm, Nonsterile, 50 per pack, SF18003 Nylon Membrane Filters, 5.00 um, 150mm, Nonsterile, 50 per pack, SF18003

    Regular Price: $158.26

    Price $125.04

  31. Polypropylene Membrane Filters, 5.00 um, 125mm, Nonsterile, 25 per pack, SF14885 Polypropylene Membrane Filters, 5.00 um, 125mm, Nonsterile, 25 per pack, SF14885

    Regular Price: $81.54

    Price $72.08

  32. MCE Membrane Filters, 5.00 um, 25mm, Nonsterile, 200 per pack, SF14626 MCE Membrane Filters, 5.00 um, 25mm, Nonsterile, 200 per pack, SF14626

    Regular Price: $76.98

    Price $69.62

  33. PTFE Membrane Filters (without substrate), 5.00 um, 47mm, Nonsterile, 100 per pack, SF18114 PTFE Membrane Filters (without substrate), 5.00 um, 47mm, Nonsterile, 100 per pack, SF18114

    Regular Price: $143.06

    Price $125.06

    As low as: $77.04
  34. MCE White Membrane/Green Grid Membrane Filters, 5.0 um, 25mm, Nonsterile, 100 per pack, SF18132 MCE White Membrane/Green Grid Membrane Filters, 5.0 um, 25mm, Nonsterile, 100 per pack, SF18132
    $51.56
  35. PTFE Membrane Filters (without substrate), 5.00 um, 90mm, Nonsterile, 100 per pack, SF18124 PTFE Membrane Filters (without substrate), 5.00 um, 90mm, Nonsterile, 100 per pack, SF18124

    Regular Price: $287.63

    Price $250.12

    As low as: $77.04
  36. PES Membrane Filters, 5.0 um, 47mm, Nonsterile, 200 per pack, SF18120 PES Membrane Filters, 5.0 um, 47mm, Nonsterile, 200 per pack, SF18120

    Regular Price: $177.85

    Price $157.78

1–36 of 41 items