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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.

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.

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28 items
  1. 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

  2. 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

  3. PTFE Hydrophilic Membrane Filters, 0.22 um, 13mm, Nonsterile, 400 per pack, SF17921 PTFE Hydrophilic Membrane Filters, 0.22 um, 13mm, Nonsterile, 400 per pack, SF17921

    Regular Price: $309.53

    Price $269.16

  4. Nylon Membrane Filters, 1.0 um, 13mm, Nonsterile, 200 per pack, SF14514 Nylon Membrane Filters, 1.0 um, 13mm, Nonsterile, 200 per pack, SF14514

    Regular Price: $79.94

    Price $70.67

  5. MCE Membrane Filters, 0.45 um, 13mm, Nonsterile, 200 per pack, SF14613 MCE Membrane Filters, 0.45 um, 13mm, Nonsterile, 200 per pack, SF14613

    Regular Price: $51.88

    Price $45.86

  6. MCE Membrane Filters, 0.65 um, 13mm, Nonsterile, 200 per pack, SF14614 MCE Membrane Filters, 0.65 um, 13mm, Nonsterile, 200 per pack, SF14614

    Regular Price: $62.35

    Price $45.86

  7. 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

  8. 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

  9. Nylon Membrane Filters, 0.10 um, 13mm, Nonsterile, 200 per pack, SF14510 Nylon Membrane Filters, 0.10 um, 13mm, Nonsterile, 200 per pack, SF14510

    Regular Price: $79.94

    Price $70.67

  10. PES Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF15161 PES Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF15161

    Regular Price: $83.89

    Price $74.16

  11. 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

  12. 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

  13. 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

  14. Nylon Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF13875 Nylon Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF13875

    Regular Price: $68.32

    Price $60.39

  15. Nylon Membrane Filters, 3.00 um, 13mm, Nonsterile, 200 per pack, SF14515 Nylon Membrane Filters, 3.00 um, 13mm, Nonsterile, 200 per pack, SF14515

    Regular Price: $79.94

    Price $70.67

  16. 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

  17. MCE Membrane Filters, 0.10 um, 13mm, Nonsterile, 200 per pack, SF14611 MCE Membrane Filters, 0.10 um, 13mm, Nonsterile, 200 per pack, SF14611

    Regular Price: $62.35

    Price $45.86

  18. 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

  19. 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

  20. 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

  21. MCE Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF14612 MCE Membrane Filters, 0.22 um, 13mm, Nonsterile, 200 per pack, SF14612

    Regular Price: $51.88

    Price $45.86

  22. MCE Membrane Filters, 1.20 um, 13mm, Nonsterile, 200 per pack, SF14616 MCE Membrane Filters, 1.20 um, 13mm, Nonsterile, 200 per pack, SF14616

    Regular Price: $62.35

    Price $45.86

  23. 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

  24. 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

  25. 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

  26. 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

  27. MCE Membrane Filters, 3.00 um, 13mm, Nonsterile, 200 per pack, SF14617 MCE Membrane Filters, 3.00 um, 13mm, Nonsterile, 200 per pack, SF14617

    Regular Price: $67.48

    Price $59.65

  28. Cellulose Nitrate CN Membrane Filters, 0.22 um, 13mm, Nonsterile, 400 per pack, SF18172 Cellulose Nitrate CN Membrane Filters, 0.22 um, 13mm, Nonsterile, 400 per pack, SF18172

    Regular Price: $443.51

    Price $385.66

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28 items