Sterile Microbiological Filtration Monitors
SKU Description Pore Size Membrane Diameter Sterility Quantity Price Add to Cart
MB-0027 Disposable Microbiological Filtration Monitor Units, 100 mL, White, Gridded, MCE Membrane Filter, Not Welded 0.45 μm 47 mm Sterile 50 Pack
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Increased Lab Efficiency

Optimize your workflow process by filtering and incubating your sample all in the same unit! Pre-assembled sterile Microbiological Filtration Monitors eliminate the preparation time traditionally spent on assembly, cleaning and autoclaving filtration units before use in test procedures or before reusing the units between successive filtration series. Monitors are manufactured to the highest standards in the industry and proven to meet or exceed the requirements of established QA/QC standard test methods.


  • Sterile, disposable unit eliminates preparation time spent on cleaning and autoclaving
  • All in one assembly combines filtration unit and petri dish and helps to minimize contamination
  • Preloaded membrane and pad eliminates transfer step and manual manipulation of the membrane
  • Built-in magnification lid for colony count
  • Reliable, reproducible results unit-to-unit and lot-to-lot


Cellulose Nitrate Membranes

Cellulose Nitrate Membranes with a pore size of 0.2 or 0.45 µm and membrane diameter of 47 mm are used for monitoring contaminants in liquid samples from raw materials to finished products. Ideal for microbiological analysis of potable water, wastewater, beverages, pharmaceuticals, cosmetics and colony counting.

Relationship of microbe retention to pore size:

Membranes of 0.2 µm porosity are recommended pore size for testing such strains as Rickettsia prowaseki, Brevundimonas diminuta, Pseudomonas diminuta, Pseudomonas aeruginosa, and Lagionella pnaumophila. 0.45 µm white membranes are tested for Coliforms, Fecal Streptococci Staphylococcus aureus and Serratia marcescens.


Membrane Material Cellulose Nitrate
Pore Sizes 0.2 µm (sterilizing) or 0.45 µm (clarification)
Membrane Diamter 47 mm
Membrane Color White
Grid Color Black
Welded to Cup No
Filtration Unit polypropylene sterilized by gamma irradiation

Common Competative Equivalents

Membrane Porosity Diameter SKU Company Equivalent SKU
0.2 μm 47 mm MB-0025 GE/Whatman (bulk packed) 10 497 511
0.2 μm 47 mm MB-0025 Nalgene (no grid, packaging unknown) 145-0020
0.2 μm 47 mm MB-0025 Sartorius Biosart®100 16401-47-07-ACK
0.45 μm 47 mm MB-0027 GE/Whatman 10 497 501
0.45 μm 47 mm MB-0027 PALL MicroChek® II 4761
0.45 μm 47 mm MB-0027 Nalgene 145-0045
0.45 μm 47 mm MB-0027 Sartorius Biosart®100 16401-47-06--ACK

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