- Home
- Products
- Lab Consumables
- Filtration
- Membrane Filters
- Whatman Mixed Cellulose Ester WME Membrane Gridded 47mm 0.45µm Pack of 100
Whatman Mixed Cellulose Ester WME Membrane Gridded 47mm 0.45µm Pack of 100
- £166.86 excl. VAT
- £200.23incl. VAT
Add to Wish List
Add to Compare
Print Page- Mixed Cellulose Ester (MCE) membrane
- WME range
- 0.45µm pore size
- 47mm diameter
- Gridded
- autoclavable
- Interleaving paper: no
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.
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:
- Clarification or sterilization of aqueous solutions
- Cytology Air monitoring HPLC samples (aqueous)
- Virus concentration
- Particulate analysis
- Biological assays
- Food microbiology including enumeration of E. coli in foods
- Bacteriological studies
- Particle counting from liquids and aerosols
- Yeasts and molds.
| Autoclavable | Yes |
| Material | Mixed Cellulose Ester (MCE) |
| Membrane Type | WME |
| Operating temp. max. | 130°C |
| Pore Size | 0.45 µm |
| Porosity Max. | 77% |
| Porosity Min. | 74% |
| Protein Binding | Medium |
| Solvent Resistance | Medium |
| Sterility | Nonsterile |
| Weight Max. | 5.0 mg/cm² |
| Weight Min. | 4.3 mg/cm² |
| Diameter | 47 mm |
| Grid Dimension | 3.1 mm |
| Interleaving Paper | No |
Guide to…Membrane Filter Properties
Identifying the filter material most suitable for your application based upon the nature of the liquid or gas you are filtering will ensure the best performance of your filter. Each membrane filter material has differing chemical and physical properties such as hydrophobicity, flow rate, extractables and protein retention making them suited to differing applications. Once you have selected the most compatible filter material, you will need to consider what pore size is most appropriate.
| Membrane Material | Protein binding | Hydrophilic/Hydrophobic | Chemical resistance | Applications |
| Hydrophilic PTFE | Low | Hydrophilic | High | Purification of HPLC organic and solvent/aqueous solutions |
| Hydrophobic PTFE | Low | Hydrophobic | High | Filtration of solvents |
| PES | Low | Hydrophilic | Low/Medium | Purification of tissue culture solutions, buffers |
| PVDF | Low | Hydrophilic | Medium | Filtration of protein solutions |
| NYL | Medium | Hydrophilic | Medium | Filtration of aqueous and solvent/aqueous mixtures |
| CA | Low | Hydrophilic | Low | Filtration of protein solutions |
| CN | High | Hydrophilic | Low | Filtration of aqueous solutions where protein binding is not a concern and microbioloigical applications. |
| RC | Low | Hydrophilic | Medium | Filtration of aqueous and organic solvents and protein recovery applications. |
