What is a PVDF filter membrane: Polyvinylidene difluoride (PVDF) membrane filters are mechanically strong, exhibit superior chemical resistance, and have high thermal stability. Available in both hydrophilic and hydrophobic options. Here are some brief introductions to PVDF Filter Membranes:

Hydrophilic PTFE filter membrane 0.22 Hydrophilic PTFE filter membrane

Brief introductions of PVDF filter membrane:

PVDF membrane filter difference:

1. PVDF hydrophilic membrane

  • A kind of microporous membrane with an asymmetric unsupported structure prepared by the reversed-phase method.
  • And compared with other microfiltration membranes such as nylon, NC, and PTFE, it has extremely low protein adsorption, ultra-high water flow rate, and broad chemical compatibility
  • Making PVDF membranes commonly used in the filtration of culture media and other protein solutions.

2. Hydrophobic PVDF filter membranes

  • Produced using a field-proven production process.
  • Superhydrophobic and can be used for solvent filtration, air and gas filtration, and sample preparation in HPLC and GC.
  • And it has excellent heat and oxidation resistance and has a wide range of applications.

Features of PVDF membrane filter:

  • Like hydrophilic PTFE filter membranes, Hydrophilic PVDF membranes contain less protein than nitrocellulose, nylon, and Teflon membranes
  •  and can often for non-sterile packaging. Autoclave if necessary at 126°C; filter at 85°C.
  • And the membrane has high mechanical strength, high tensile strength, good heat resistance and chemical stability, and a low protein adsorption rate
  •  Using PVDF as the raw material of the filter membrane, the PVDF products prepared by appropriate processes have good mechanical strength and toughness and are without corroded acids, alkalis, strong oxidants, and halogens at room temperature.
  • In addition, very stable with other organic solvents. In hydrochloric acid, nitric acid, sulfuric acid, and dilute concentrated (40%) lye, basically unchanged performance at temperatures up to 100 °C
  • And it is resistant to gamma rays, and ultraviolet rays. Wide temperature range, can often for a long time, basically, maintain performance.

Application of PVDF membrane filter:

1. PVDF hydrophilic membrane

  • Hydrophilic polyvinylidene fluoride membrane is mainly for  the purification and filtration of tissue culture medium, additives, and other sterilizing filtration solvents
  • And for chemical raw materials, aseptic treatment of reagents, filtration of high-temperature liquids, etc.
  • Hydrophilic membranes can also for sterile filtration of protein solutions, tissue culture media, liquids such as antibiotics and ethanol, and particle removal filtration for applications such as bioassays (e.g. receptor binding studies, TCA precipitation).
  • In addition, for blood product filtration,  vaccine filtration, filtration of biological reagents, and sterile filtration of antibiotic solutions

2. Hydrophobic PVDF filter membranes

  • Hydrophobic membranes are suitable for gas filtration. filter gases and vapors.
  • And filter with an oxidizing agent, purification, filter hot liquid, oil-water separation, and membranes for pleated filter elements.