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Whatman™ ME Membrane Filters

Manufactured from cellulose nitrate developed specifically for microbiological quality control. Whatman™ MicroPlus and ME Membrane Filters provide the optimal analytical method for monitoring production processes.

Manufacturer: whatman™  10409470

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Catalog No. 09-806-218


Description & Specifications


Autoclavable Yes
Color Green
Diameter (Metric) Outside 4.7cm
Grid Color Black
Product Type Membrane Filter
Includes Interleaving paper
Hydrophobicity Hydrophilic
Material Mixed Cellulose Ester
Membrane Type ME25
Protein Binding Capacity Medium
Surface Type Grid
Sterile Yes
Temperature (English) Operating 266°F
Pore Size 0.45μm
Size (Metric) Grid 0.31cm
Temperature (Metric) Operating 130°C


  • Made from mixed cellulose esters
  • Economical
  • Specifically for aqueous solutions
  • Hydrophilic
  • For use up to 125°C
  • Sterile, individually packed
  • All membrane filters have a high-contrast grid (3.1mm)
  • Excellent contrast for easier particle detection
  • Grids are nontoxic and do not inhibit bacterial growth, ensuring sample integrity
  • High degree of internal surface area for greater adsorption of product, high dirt loading capacity
  • Biologically inert with good thermal stability
  • No surfactants to contaminate samples
  • Uniform microporous structure of membrane gives high flow rates