Biological Liquid Handling
Laboratory Liquid Filters
Select filters for laboratory fluid handling based on the liquid, volume and tubing connections.
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LABORATORY / Biological Liquid Handling
Vacuum Filtration Units
Coordinate the vessel and vacuum source with filtration area, volume and membrane compatibility.
- Product type
- Biological Liquid Handling
- Material options
- PES / other media
- 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 vacuum filtration unit combines an upper reservoir, membrane and receiving container. Vacuum on the downstream side drives liquid through the membrane directly into the receiver. It is useful for batch preparation of aqueous laboratory fluids. Reservoir capacity describes how much can be loaded, while membrane area, viscosity and particulate loading determine practical throughput; foaming and volatile components also need consideration.
Typical uses
- Laboratory preparation of media and buffers
- Batch filtration of relatively clear aqueous solutions
- Combined filtration and collection workflows
Compare product approaches
| Selection factor | What to compare |
|---|---|
| Assembly format | Complete units simplify collection; separate funnels require compatible, vacuum-rated receivers. |
| Membrane | Compare recovery of proteins and additives alongside analytical background. |
| Capacity and area | Reservoir volume governs loading; membrane area and fouling govern processing time. |
Selection information to confirm
| Category | Biological Liquid Handling |
|---|---|
| Material options | PES / other media |
| 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
Connection
Use vacuum-rated vessels and appropriate protection against liquid entering the vacuum source.
- 02
Loading
Observe liquid level and foam, preventing receiver overflow into the vacuum line.
- 03
Completion
Release vacuum according to the device procedure before disassembly and promptly close the receiver.
Product questions
Does stronger vacuum always help?
It may worsen foaming or exceed vessel limits without solving membrane blockage.
Is the filtrate necessarily sterile?
That depends on the specific membrane grade, assembly condition and validated handling process.
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