Mixed Cellulose Ester Membranes-Plain ME 24, Gridded

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.

Features and benefits

• 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
• Thermally stable

Applications

The membrane is particularly effective in applications requiring higher flow rates and larger volume filtration,
including clarification or sterilization# of aqueous solutions, particulate analysis and removal, air monitoring
and microbial analysis. Other applications include:
• Cytology
• HPLC samples (aqueous)
• Biological assays
• Food microbiology, including enumeration of E. coli in foods
• Bacteriological studies
• Particle counting from liquids and aerosols
• Yeasts and molds