Filtration Membrane Discs
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THERMAL STABILITY
MAXIMUM VERSATILITY
LOW PROTEIN & DRUG BINDING
RAPID DRYING
HIGH FLOW RATE & CHEMICAL / THERMAL RESISTANCE
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AVAILABLE IN A RANGE OF DIAMETERS
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Complete your filtration membrane disc order with the necessary accessories.
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Merck™ Classic Glass Vacuum Filter Holder Kits, 47mm
Vacuum filter holder kits for complete filtration.
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Sartorius Microsart™ Maxi Vacuum Pumps
Vacuum pumps for daily microbiological filtration.
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Cytiva™ (Formerly Pall Lab™) Magnetic Filter Funnels, Non-Sterile
Magnetic filter funnels for sterile filtration and clarification.
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Watch This Video
Vacuum Filtration Made Easy
This video shows how to perform vacuum filtration with Merck's Isopore™ membrane filters and Millicup™ Flex disposable vacuum filtration units in a few simple steps:
- Select the appropriate 47mm membrane filter
- Assemble the filtration unit and connect vacuum source
- Filter the solution
- Remove the filtration device and recycle
Guides to Help You Choose
Whatman Filtration Product Guide
Find the right product for your filtration by application or product type.
Sartorius Laboratory Filtration Products
An extensive guide for finding your basic filtration products.
Merck Contamination Monitoring Product Guide
Membranes and acessories for all your contamination monitoring needs.
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Frequently Asked Questions
What is the difference between hydrophilic and hydrophobic membrane filters?
Hydrophilic membrane filters are typically used with water and aqueous solutions. They can also be used with compatible non-aqueous fluids. Hydrophilic membrane filters are typically not used for air, gas or vent filtration since the filters would block flow if inadvertently wetted, for example by condensation.
When should I choose a sterile or non-sterile membrane filter?
This will depend on the processing applications used: If the solution is already sterilized, choose a sterile filter. If your solution is going to be filtered through a sterilization process, a non-sterile filter could also work.
How do I select a suitable pore size?
Pore size is determined by the size of the particles (in microns) that we want to separate. For more than 3µm, choose a filter membrane with pore size 0.45µm and for less than 3µm, choose a poor size of 0.22µm. The lower the membrane micron rating the finer the filtration.
