Filter Media: MCE
Diameter: 47mm, 55mm
Color: White/Black
Pore Size: 0.22μm, 0.45μm, 0.8μm
Availability: In Stock
Microbiological Membrane Filtration Unit
Description
Pre-sterilized Disposable System for Microbial Detection and CFU Enumeration
Product Overview
The Microbiological Membrane Filtration Unit (MF Unit) is a pre-sterilized disposable system designed for microbial detection, colony forming unit (CFU) enumeration, and sterility-related analysis of liquid samples.
The system integrates filtration, microbial retention, and incubation preparation into a closed workflow, reducing contamination risk and improving reproducibility in regulated laboratory environments.
Working Principle
The membrane filtration method is used to separate microorganisms from liquid samples by vacuum filtration through a microporous membrane.
Microorganisms are retained on the membrane surface while liquid passes through, enabling quantitative analysis based on colony forming units (CFU).
After filtration, the system is converted into an incubation unit where the membrane functions as a culture surface for microbial growth and enumeration.
Product Structure
- Sterile graduated filtration funnel
- Membrane support base
- MCE gridded membrane for CFU counting
- Absorbent pad for nutrient support
- Removable sealing lid
- Bottom plug for closed incubation system
Key Features
- Pre-sterilized single-use system eliminates cross-contamination
- Integrated filtration and incubation workflow
- Gridded membrane enables accurate CFU enumeration
- Compatible with standard vacuum filtration systems
- Supports GMP-compliant laboratory operations
- Reduces handling steps and operator variability
- Closed system minimizes environmental contamination risk
Technical Specifications
| Parameter | Specification |
| Material | Polystyrene (PS) |
| Membrane Type | MCE (Mixed Cellulose Ester) |
| Pore Size | 0.22 μm / 0.45 μm / 0.8 μm |
| Diameter | 47 mm / 55 mm |
| Sterilization | Gamma irradiation |
| Format | Disposable, single-use |
Applications
- Pharmaceutical sterility testing (GMP environments)
- Water for Injection (WFI) and purified water monitoring
- Drinking water microbiological testing
- Food and beverage microbial quality control
- Environmental contamination monitoring
- Microbial enumeration and CFU analysis
Method Comparison
MF Unit vs Traditional Petri Dish Method
- MF Unit reduces sample transfer steps
- Lower contamination risk due to closed system
- Improved CFU counting consistency
- Faster workflow integration
MF Unit vs Conventional Filtration Funnel
- Disposable system eliminates cleaning validation
- Pre-sterilized format reduces preparation time
- Integrated incubation capability
Performance Advantages
- High microbial recovery efficiency
- Improved CFU reproducibility across operators
- Reduced environmental contamination risk
- Optimized workflow for GMP laboratories
- Standardized membrane-based enumeration process
Available Configurations
- Sterile individually packed MF Unit
- Non-sterile bulk packaging
- White or black gridded membranes
- Multiple pore size options for different microbial targets
Ordering Information
| Cat. No. | Description | Package(Qty/Carton) |
| White MCE Gridded Membrane | ||
| 11298003 | 100ml, White MCE Gridded, with Pad, Diameter:47mm, 0.22um,Sterile, Individual packed | 50pcs |
| 11298001 | 100ml, White MCE Gridded, with Pad, Diameter:47mm, 0.45um,Sterile, Individual packed | 50pcs |
| 11298004 | 100ml, White MCE Gridded, with Pad, Diameter:47mm, 0.8um,Sterile, Individual packed | 50pcs |
| 11298007 | 100ml, White MCE Gridded, with Pad, Diameter:55mm, 0.22um,Sterile, Individual packed | 50pcs |
| 11298002 | 100ml, White MCE Gridded, with Pad, Diameter:55mm, 0.45um,Sterile, Individual packed | 50pcs |
| 11298008 | 100ml, White MCE Gridded, with Pad, Diameter:55mm, 0.80um,Sterile, Individual packed | 50pcs |
| Black MCE Gridded Membrane | ||
| 11298005 | 100ml, Black MCE Gridded, with Pad, Diameter:47mm,0.22um, Sterile, Individual packed | 50pcs |
| 11298006 | 100ml, Black MCE Gridded, with Pad, Diameter:47mm,0.45um, Sterile, Individual packed | 50pcs |
Frequently Asked Questions
What is a Membrane Filtration Unit used for?
It is used for microbial detection and CFU enumeration in liquid samples using the membrane filtration method.
What is CFU in microbiology testing?
CFU (colony forming unit) represents the number of viable microorganisms capable of forming colonies on a membrane surface.
Can it replace traditional membrane filtration setups?
Yes. It integrates filtration and incubation into a single disposable system, reducing multi-step handling.
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