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Whatman™ 7140-104
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Whatman™ Sterile Mixed Cellulose Ester Membrane Filter, 0.45 µm Pore Size, 47 mm dia

Membrane Filter, 47 mm dia, White, Mixed Cellulose Ester, 0.45 µm Pore Size, Circle Format, Plain, WME Range, 140 µm Thickness, 74 to 77% Porosity, 3.1 mm Grid Size, 4.3 to 5 mg/cm2 Basis Weight, Sterile, Autoclavable, With Pad

  • Manufacturer Part No: 7140-104
  • SECO Part No: 12-4533-01
  • Sold As:
  • Availability: loading

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.

Diameter : 47 mm
Color : White
Material (ml/min) : Mixed Cellulose Ester
Grid Size : 3.1 mm
Pore Size : 0.45 µm
Sterility : Sterile
Type : Plain, WME Range
Burst Pressure : >10 psi
Format : Circle
Interleaving Paper : No
Nominal Basis Weight : 4.3 to 5 mg/cm2
Operating Temperature : 130°C
Porosity : 74 to 77%
Protein Binding : Medium
Solvent Resistancy : Medium
Thickness : 140 µm
Application : For Higher Flow Rates and Larger Volume Filtration Including Clarification or Sterilization of Aqueous Solutions, Particulate Analysis and Removal, Air Monitoring and Microbial Analysis
Autoclavable : Yes
With : With Pad
  • 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
  • Eased counting process
  • pdf Brochure /ASSETS/DOCUMENTS/ITEMS/EN/10400012.pdf

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