Category Archives: Hydrophobic Membrane filter

Introduction of PVDF membranes

PVDF membranes (polyvinylidene difluoride) are particularly microporous membranes, can be prepared to exhibit high efficiency for particle removal. There are Hrophobic PVDF membrane and Hydrophilic PVDF membrane. Most is Hrophobic PVDF membranes with a pore size of 0.2 or 0.45 µm. Proprietary alterations in the pierce PVDF membrane make it more resistant to discoloration which often occurs with other commercially available PVDF membrane filter.

PVDF membranes have many applications in Chemical Process Industry. Hrophobic PVDF membranes provided by Membrane Solutions have high binding affinity for proteins and nucleic acids and may be used for applications such as Western, Southern, Northern and dot blots.
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Knowledge of Hydrophobic Glass Fiber Membrane Filter

Glass fiber filters are manufactured from 100% borosilicate glass. Glass fiber filters are manufactured by Membrane Solutions. Hydrophobic glass fiber membrane filter is a barrier to airborne microbial contaminants, and its surface is modified so that the medium may be used in vent applications exposed to extremely viscous solutions.

Thickness Air Flow Rate Water Intrusion
(mils) (microns) (sccm/cm2/psi) (lpm/cm2/bar) (psi) (bar)
10.0-14.0 254.0-355.6 2400 34.8 5.0 0.34

Sterilization: Autoclave, gamma irradiation, or EtO
Biosafety: Passes USP class VI-121° C plastics tests for biosafety, hemolysis, and cytotoxity testing
Sealing: Methods including heat welding and sonic welding

Applications
 Intravenous (IV) venting
 Ostomy bags
 Suction canisters
 Urine bags
 Transducer protectors
 Enteral feeding packaging
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Hydrophobic and Hydrophilic Membrane Filters

Hydrophilic Membrane Filters possess an affinity for water can be pre-wet with virtually any liquid are preferred for aqueous solutions.

Hydrophobic Membrane Filters will not allow passage of water will wet in low surface tension liquids such as organic solvents

Hydrophilic or Hydrophobic Characteristics by Membrane Type

Hydrophilic: MCE, Glass Filter, Nylon, CA, PVDF, PTFE and PES
Hydrophobic: PVDF, PTFE, PP