AZUR SYSTEMIllustration
Microbiology Supplies
Microbiology Filtration Funnels
Connect filtration and transfer steps while considering sample volume, sealing and aseptic handling.
Membrane / funnel assemblyExplore ↗
AZUR SYSTEMIllustration
LABORATORY / Microbiology Supplies
Gridded Membranes
A grid supports colony counting. Confirm material, pore rating and incubation conditions against the test method.
- Product type
- Microbiology Supplies
- Material options
- Method-specific
- Specifications
- Confirmed by model and process
Images and specifications refer to the indicated models. Contact us to confirm configuration and suitability.
Construction & operating principle
A gridded membrane links membrane filtration to colony enumeration. Microorganisms retained during filtration are transferred with the disc to an appropriate culture environment. Printed lines assist counting and location. Results depend on organism recovery, sample inhibition and contact with the growth medium, so neither colour nor pore rating alone establishes suitability for a microbiological method.
Typical uses
- Membrane-based examination of water samples
- Enumeration of culturable organisms under a defined method
- Parallel tests using different sample volumes
Compare product approaches
| Selection factor | What to compare |
|---|---|
| Grid and colour | Choose useful colony contrast; grid lines aid location rather than improve retention. |
| Membrane and method | Assess target-organism recovery and any treatment needed for inhibitory samples. |
| Packaging | Individual and continuous packs support different handling and dispensing arrangements. |
Selection information to confirm
| Category | Microbiology Supplies |
|---|---|
| Material options | Method-specific |
| Filtration objective | Define what to remove and what to retain |
| Rating / Dimensions | Confirm combinations against controlled model specifications |
| Flow / Temperature / Pressure | Specify normal and limiting operating conditions |
| Connections / Seals | Confirm installation interfaces and wetted materials |
| Cleaning / Validation | Confirm the service cycle and acceptance criteria |
These are selection inputs, not verified performance claims for a specific model.
Build a clear application brief
Use the worksheet to collect your operating conditions. Contact us for controlled datasheets, dimensional drawings or validation documents for a specific model.
Product selection worksheet · TXT ↓Request technical documents ↗Use & maintenance
- 01
Filtration
Use a method-appropriate volume; excessive loading can block the membrane or merge colonies.
- 02
Placement
Establish even medium contact without trapped air beneath the disc.
- 03
Counting
Apply defined incubation and interpretation rules, retaining blanks and recovery controls.
Product questions
Does a grid enable automatic counting?
It assists positioning; automated interpretation still needs suitable imaging and validation.
Does no growth prove an absence of microorganisms?
Inhibition, inadequate recovery or unsuitable incubation can also produce a negative result.
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