Mixed Cellulose Ester Membrane by Whatma
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Mixed Cellulose Ester Membrane by Whatma

  • Mixed Cellulose Ester Circle ME Range (ME 28), green/black grid 3.1 mm, sterile, 1.2 µm pore size
  • Sterile options available for critical applications
  • Excellent contrast for easier particle detection
  • Grids are nontoxic and do not inhibit bacterial growth, ensuring sample integrity
  • Black plain and black gridded membranes have a mix of cellulose nitrate and cellulose acetate
  • The membrane offers a high degree of internal surface area for greater adsorption of product
  • Higher dirt loading capacity
  • Biologically inert with good thermal stability
  • No surfactants to contaminate samples
  • Uniform microporous structure of membrane gives high flow rates
  • Whatman mixed cellulose ester membranes are composed of cellulose acetate and cellulose nitrate
  • These membranes are characterized by a smoother and more uniform surface than pure nitrocellulose filters
  • Also, the color contrast provided by the filter surface facilitates particle detection and minimizes eye fatigue
  • The ME range has a lower cellulose acetate content compared to the WME range of membranes
  • Eased counting process:
  • In microbiological colony counting procedures, the color contrast between the surface and the colonies facilitates the counting process
  • Plain or gridded:
  • Many microbiological techniques include colony counting after incubation as the standard method of quantitation
  • Whatman gridded filters have clearly defined grid lines spaced at 3.1 mm or 5 mm intervals
  • The special ink used is nontoxic and completely free from bacterial growth inhibitors
  • Whatman black mixed cellulose esters are available plain for automatic colony counting applications, as well as gridded to assist in manual counting procedures
  • Black membranes provide contrast between residue or cell colors and the filter without having to counter-stain the membrane
  • Sterile filters:
  • For those laboratories preferring to use membranes sterilized by autoclaving for microbiological work, Whatman provides black gridded membranes in packs with pads ready for laboratory autoclaving


To view pricing/availability

Material Description Packaging
GEH10401506 MEMBRANE, MIXED, ME26 0.6UM 25MM 100/PK 100/PK
GEH10401512 MEMBRANE, MIXED, ME26 0.6UM 47MM 100/PK 100/PK
GEH10401514 MEMBRANE, MIXED, ME26 0.6UM 50MM 100/PK 100/PK
GEH10401606 MEMBRANE, MIXED, ME25 0.45UM 25MM 100/PK 100/PK
GEH10401612 MEMBRANE, MIXED, ME25 0.45UM 47MM 100/PK 100/PK
GEH10401614 MEMBRANE, MIXED, ME25 0.45UM 50MM 100/PK 100/PK
GEH10401618 MEMBRANE, MIXED, ME25 0.45UM 90MM 50/PK 50/PK
GEH10401621 MEMBRANE, MIXED, ME25 0.45UM 100MM 50/PK 50/PK
GEH10401626 MEMBRANE, MIXED, ME25 0.45UM 110MM 50/PK 50/PK
GEH10401631 MEMBRANE, MIXED, ME25 0.45UM 142MM 25/PK 25/PK
GEH10401670 MEMBRANE, MIXED, ME25 ST 0.45UM 47MM 100PK 100/PK
GEH10401672 MEMBRANE, MIXED, ME25 ST 0.45UM 50MM 100PK 100/PK
GEH10401706 MEMBRANE, MIXED, ME24 0.2UM 25MM 100/PK 100/PK
GEH10401712 MEMBRANE, MIXED, ME24 0.2UM 47MM 100/PK 100/PK
GEH10401714 MEMBRANE, MIXED, ME24 0.2UM 50MM 100/PK 100/PK
GEH10401721 MEMBRANE, MIXED, ME24 0.2UM 100MM 50/PK 50/PK
GEH10401726 MEMBRANE, MIXED, ME24 0.2UM 110MM 50/PK 50/PK
GEH10401731 MEMBRANE, MIXED, ME24 0.2UM 142MM 25/PK 25/PK
GEH10401770 MEMBRANE, MIXED, ME24 ST 0.2UM 47MM 100/PK 100/PK
GEH10401772 MEMBRANE, MIXED, ME24 ST 0.2UM 50MM 100/PK 100/PK
GEH10406512 MEMBRANE, MIXED, ME25/20 0.45UM 47MM 100PK 100/PK
GEH10406572 MEMBRANE, MIXED, ME25/20 ST 0.45UM 50MM 100/PK
GEH10406812 MEMBRANE, MIXED, ME25/21 0.45UM 47MM 100/PK
GEH10406814 MEMBRANE, MIXED, ME25/21 0.45UM 50MM 100/PK
GEH10406870 MEMBRANE, MIXED, ME25/21 ST 0.45UM 47MM 100/PK
GEH10406871 MEMBRANE, MIXED, ME25/21 ST 0.45UM 47MM 1000/PK
GEH10406872 MEMBRANE, MIXED, ME25/21 ST 0.45UM 50MM 100/PK
GEH10406970 MEMBRANE, MIXED, ME24/21 ST 0.2UM 47MM 100/PK
GEH10406972 MEMBRANE, MIXED, ME24/21 ST 0.2UM 50MM 100/PK
GEH10407312 MEMBRANE, ME25/21 STL 0.45UM 47MM 400/PK 400/PK
GEH10407314 MEMBRANE, ME25/21 STL 0.45UM 50MM 400/PK 400/PK
GEH10407324 MEMBRANE, ME25/20 STL 0.45UM 50MM 400/PK 400/PK
GEH10407332 MEMBRANE, ME25/31 STL 0.45UM 47MM 400/PK 400/PK
GEH10407334 MEMBRANE, ME25/31 STL 0.45UM 50MM 400/PK 400/PK
GEH10407370 MEMBRANE, ME25/41 STL 0.45UM 47MM 400/PK 400/PK
GEH10407372 MEMBRANE, ME25/41 STL 0.45UM 50MM 400/PK 400/PK
GEH10407970 MEMBRANE, MIXED, ME25/51 ST 0.45UM 47MM 100/PK
GEH10408472 MEMBRANE, MIXED, ME28/41 ST 1.2UM 50MM 100/PK
GEH10408712 MEMBRANE, MIXED, ME24/21 STL 0.2UM 47MM 400/PK
GEH10408714 MEMBRANE, MIXED, ME24/21 STL 0.2UM 50MM 400/PK
GEH10408915 MEMBRANE, MIXED, ME27/21 STL 0.8UM 50MM 400/PK
GEH10408970 MEMBRANE, MIXED, ME27/21 ST 0.8UM 47MM 100/PK
GEH10409414 MEMBRANE, MIXED, ME25/41 0.45UM 50MM 100/PK
GEH10409470 MEMBRANE, MIXED, ME25/41 ST 0.45UM 47MM 100/PK
GEH10409472 MEMBRANE, MIXED, ME25/41 ST 0.45UM 50MM 100/PK
GEH10409714 MEMBRANE, MIXED, ME25/31 0.45UM 50MM 100/PK
GEH10409770 MEMBRANE, MIXED, ME25/31 ST 0.45UM 47MM 100/PK
GEH10409771 MEMBRANE, ME25/31 ST 0.45UM 47MM 1000/PK 1000/PK
GEH10409772 MEMBRANE, ME25/31 ST 0.45UM 50MM 100/PK 100/PK
GEH10409814 MEMBRANE, ME26/31 0.6UM 50MM 100/PK 100/PK
GEH10409834 MEMBRANE, ME26/31 STL 0.6UM 50MM 400/PK 400/PK
GEH10409870 MEMBRANE, ME26/31 ST 0.6UM 47MM 100/PK 100/PK
GEH10409872 MEMBRANE, ME26/31 ST 0.6UM 50MM 100/PK 100/PK
GEH10409970 MEMBRANE, ME27/61 ST 0.8UM 47MM 100/PK 100/PK
GEH7187114 WME WHGRSTNPAD 47MM 0.2 100 100/PK



HPIS Code 220_40_140_0, 700_80_20_0, 530_40_60_0
Latex Free No
UNSPSC 41104921


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