0
Whatman™ Mixed cellulose ester membranes, sterile, 0.45 µm, 47 mm
Catalog No :
CAS Number :
Brand :
In Stock
Specifications:
| Application | Microbiology, Filtration |
| Material | Water Quality Analysis |
| Storage Temperature | Room Temperature |
| Product Type | Filter Papers |
| Product Brand | Whatman™, Cytiva |
| Product Grade | Laboratory grade |
The Whatman™ Sterile Mixed Cellulose Ester (MCE) Membranes are high-performance filtration membranes composed of cellulose acetate and cellulose nitrate, designed for microbiological analysis, sterility testing, and particle detection. These membranes feature a uniform microporous structure and smooth surface, delivering high flow rates, excellent particle retention, and superior contrast for colony counting.
Available in plain and gridded formats, as well as white, black, and green variants, these sterile membranes are optimized for both manual and automated microbiological workflows. Their biologically inert composition and absence of surfactants ensure reliable results without interference in sensitive applications.
Key Features
High-Performance MCE Composition
- Made from cellulose acetate and cellulose nitrate blend
- Smooth and uniform surface for consistent filtration
- High internal surface area for enhanced adsorption
Excellent Contrast for Analysis
- Available in white, black, and green membranes
-
Enhances visibility for:
- Colony counting
- Particle detection
- Reduces eye strain during analysis
Gridded & Plain Options
- Gridded membranes (3.1 mm or 5 mm spacing) for manual counting
- Plain membranes for automated counting systems
- Nontoxic grid ink does not inhibit bacterial growth
Sterile & Ready-to-Use
- Supplied pre-sterilized for critical applications
- Individually packed options available
- Compatible with microbiological testing workflows
High Flow Rate & Loading Capacity
- Uniform microporous structure enables rapid filtration
- High dirt-loading capacity improves efficiency
Biologically Inert & Clean
- Free from surfactants and contaminants
- Maintains sample integrity and reproducibility
Applications
- Microbiological analysis and colony counting
- Sterility testing in pharmaceutical and clinical labs
- Water quality testing and environmental monitoring
- Food and beverage microbiology
- Air and particulate analysis
- Membrane filtration for bacterial enumeration
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Mixed Cellulose Ester (MCE) Membrane |
| Composition | Cellulose acetate + cellulose nitrate |
| Pore Size | 0.45 µm |
| Sterility | Sterile |
| Surface Options | Plain / Gridded |
| Colors Available | White, Black, Green |
| Grid Spacing | 3.1 mm or 5 mm |
| Diameter Options | 47 mm, 50 mm |
| Pack Size | 100 membranes per pack |
| Additives | No surfactants |
Ordering Information (Selected Models)
| Catalog Number | Description | Diameter | Format | Pack Size |
|---|---|---|---|---|
| 10401670 | Plain sterile MCE membrane (ME25) | 47 mm | Plain | 100/pk |
| 10401672 | Plain sterile MCE membrane (ME25) | 50 mm | Plain | 100/pk |
| 10406870 | White membrane, 3.1 mm black grid | 47 mm | Gridded | 100/pk |
| 10407970 | White/black grid, 3.1 mm | 47 mm | Gridded | 100/pk |
| 10409770 | Black/white grid, 3.1 mm | 47 mm | Gridded | 100/pk |
| 10409470 | Green membrane, 3.1 mm grid | 47 mm | Gridded | 100/pk |
| 10406572 | White/black grid, 5 mm | 50 mm | Gridded | 100/pk |
| 10406872 | White membrane, 3.1 mm grid | 50 mm | Gridded | 100/pk |
| 10409772 | Black/white grid, 3.1 mm | 50 mm | Gridded | 100/pk |
| 10409472 | Green membrane, 3.1 mm grid | 50 mm | Gridded | 100/pk |
| 7141-104 | White gridded membrane with pad | 47 mm | Individually packed | 100/pk |
| 7141-114 | White gridded membrane (no pad) | 47 mm | Individually packed | 100/pk |
| 7153-104 | Black gridded membrane with pad | 47 mm | Individually packed | 100/pk |
| 7187-114 | White gridded membrane (0.2 µm) | 47 mm | Individually packed | 100/pk |
Workflow Integration
Sample Collection → Membrane Filtration → Incubation → Colony Counting → Data Analysis
This ensures:
- Efficient microbial capture
- Clear visualization of colonies
- Accurate quantitative analysis
Unique Advantages
- Superior contrast for easy colony counting
- Gridded and color options for flexible workflows
- High flow rate and excellent loading capacity
- Sterile, ready-to-use membranes reduce preparation time
- Biologically inert and free from interfering substances
- Trusted Whatman™ quality for microbiological analysis
The Whatman™ Sterile Mixed Cellulose Ester (MCE) Membranes – 0.45 µm provide a reliable and versatile solution for laboratories requiring accurate microbial detection, high filtration efficiency, and clear visualization. With their advanced composition, flexible formats, and sterile convenience, they are essential for microbiological, environmental, and analytical laboratory workflows.
- Filter Description: Plain sterile MCE membrane (ME25), 47 mm Plain sterile MCE membrane (ME25), 50 mm White membrane, 3.1 mm black grid, 47 mm White/black grid, 3.1 mm, 47 mm Black/white grid, 3.1 mm, 47 mm Green membrane, 3.1 mm, grid 47 mm Green membrane, 3.1 mm grid, 47 mm White membrane, 3.1 mm grid, 50 mm Black/white grid, 3.1 mm, 50 mm Green membrane, 3.1 mm grid, 50 mm White gridded membrane with pad, 47 mm White gridded membrane (no pad), 47 mm Black gridded membrane with pad, 47 mm