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Whatman™ Mixed Cellulose Ester Membranes

Facilitates particle detection and minimizes eye fatigue with surface marks and color contrast. Whatman™ Mixed Cellulose Ester Membranes are available plain or gridded for automatic or manual counting procedures.

Manufacturer: whatman™  10400909

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Catalog No. 09-927-260

  • / Pack

Description & Specifications


Grid Color Plain
Size (Metric) Grid 3.1mm
Membrane Type ME 27
Diameter (Metric) Outside 37mm
Quantity 100Pack
Diameter (English) Outside 1.45 in.
Product Type Mixed Cellulose Ester Membrane
Temperature (English) Operating 266°F
Waterflow Rate 2.8 sec./100mL/12.5cm2
Thickness (Metric) 135μm
Autoclavable Yes
Material Mixed Cellulose Ester
Includes Interleaving paper
Pore Size 0.8μm
Temperature (Metric) Operating 130°C
Sterile No
Protein Binding Capacity Medium

Offers a high degree of internal surface area for greater adsorption of product.
  • 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.
  • Higher dirt loading capacity.
  • Biologically inert with good thermal stability.
  • No surfactants to contaminate samples.
  • Uniform microporous structure of membrane gives high flow rates.
  • Special nontoxic ink used is completely free from bacterial growth inhibitors
  • Manufactured under strictly controlled cleanroom conditions