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      Medical

      Hydrophilic / Hydrophobic PVDF Membrane

      PVDF-membrane.jpg

      Polyvinylidene Fluoride (PVDF) membrane is a naturally hydrophobic, unsupported membrane, it has received great attention because of its outstanding properties including high thermal stability, great mechanical strength and chemical resistance, which makes it has good resistance to organic solvents, corrosion, oxidation and withstand solutions of pH 2-10.

      Cobetter Polyvinylidene Fluoride (PVDF) filter is available in Hydrophobic version or Hydrophilic version(after hydrophilic treatment). The PVDF membrane is produced with high porosity and optimized porous structure, it is an essential membrane in various industries, for example Medical, Laboratory,Food & Beverage, Pharmaceutical, etc.


      The hydrophobic PVDF membrane with great hydrophobic ability, fast air flow rate and professional general /sterile filtration capability, easy for assembling as unnecessary to distinguish the front and back side, can be ideally used as a PVDF venting membrane filter or air filtration/sterilization for medical devices or diagnosis assay.

      Also hydrophobic PVDF membrane can be used as a carrier media of biosensors or a transfer membrane for protein blotting applications (Western Blot / ELISPOT). The optimized porous structure and high binding capacity for protein of Cobetter hydrophobic PVDF membrane makes it easy to access bound proteins and remove unbounded probes. The low background for fluorescent blots of PVDF membrane significantly increases signal-to-noise ratios for high sensitively in quantitative, multiplexing applications.


      For more details, please click to: 
      PVDF Western Blotting Membrane

      PVDF-Transfer-Membrane.jpg


      The hydrophilic PVDF membrane with very low protein binding and high flow rate features, is ideal for clarification, pre-filtration and sterile filtration of fluids such as water, diagnostic reagent, buffer, cell culture medium, ophthalmic solution, blood products/serum, etc, offering efficient bacterial and particulate retention.

      Also the hydrophilic version PVDF membrane are popular in the usage of syringe filter, funnel filter, vacuum filter and sterility testing devices applications for particles removal, sample preparation or general filtration,etc. 


       

      S58 Filtration UnitAscle U Filtration FunnelDisposable Vacuum FilterSterility TestingSyring Filter
      S58-Filtration-Unit-cbt.jpgAscle-U-Filtration-Funnel-cbt.jpgDisposable-Vacuum-Filter-System-small-021-cbt.jpgSterility-Testing-cbt.jpgsyringe filter units.jpg



      Meet ATCC*19146) Retention Test. 107cfu/ cm Brevundimonas diminuta (ATCC*19146)

      "Non-fiber releasing" as defined by FDA 21 CFR 210.3(b)(6) Filter Standards

      Certified Biological Safety (USP Class VI)

      Outstanding Flow Rates & Throughput

      Low Extractables & Background

      Broad Chemical Compatibility

      Lot-to-lot Consistency




      Typical Applications

        Hydrophobic PVDF Membrane 

      - Ventilation Filter

      - Sterile-grade Filtration for Compressed Air, Oxygen, Nitrogen. Etc

      - Binding Assay

      - Western Blotting Membrane
      - ELISPOT Test

      - Immunoblotting Test

      - Protein Sequencing

      - Biosensors

      Hydrophilic PVDF Membrane 

      Widely Used for Below Filtration as PVDF Filters (Membrane Filters, Capsule Filter, Cartridge Filter, Syringe Filter, Funnel Filter, etc)

      - Particulate Removal

      - Clarifying Filtration

      - General Filtration

      - Analytical Sample Preparation, μHPLC

      - Diagnostic Reagent Filtration and Sterilization

      - Media filtration

      - Low Protein Adsorption Filtration

      - Endotoxin Adsorption (Positively Charged)


      General Specifications

      Color

      White

      Surface

      Plain

      Pore Size 

      0.1 / 0.22 / 0.3 / 0.45 / 0.65 / 1.0 / 2.0 μm

      Wettability

      Hydrophilic or Hydrophobic

      Sterilization

      Autoclave, Ethylene Oxide, E-Beam, Gamma Irradiation

      Sealing Compatibility

      Ultrasonic, Heat, Mechanical, RF Welding, Inserting Molding



      Specifications

      Detailed Description

      Pore Size

      Thickness

      Water Flow Rate
      @ -30kPa *50ml *12.68cm2

      Bubble Point
      (Water)

      Endotoxin

      Hydrophilic PVDF

      0.1μm

      125μm

      85s

      550 kPa

      ≤ 0.5EU/ml

      0.22μm

      125μm

      35s

      390 kPa

      ≤ 0.5EU/ml

      0.45μm

      125μm

      9s

      230 kPa

      ≤ 0.5EU/ml

      0.65μm

      125μm

      6s

      180 kPa

      ≤ 0.5EU/ml

      1.0μm

      125μm

      12s ( -5 kPa )

      110 kPa

      ≤ 0.5EU/ml

      2.0μm

      125μm

      6s ( -5 kPa)

      75 kPa

      ≤ 0.5EU/ml

      Detailed Description

      Pore Size

      Thickness

      Air Flow Rate
      @ -100ml * 1in2 * 4.88 in. water

      WEP
      (60s)

      Endotoxin

      Hydrophobic PVDF

      0.22μm

      160μm

      40s

      260 kPa

      ≤ 0.5EU/ml

      0.22μm

      65μm

      28s

      320 kPa

      ≤ 0.5EU/ml

      0.45μm115μm11s140 kPa≤ 0.5EU/ml

      1.0μm

      110μm

      4s

      70 kPa

      ≤ 0.5EU/ml


      Cobetter Hydrophilic PVDF Membrane Shows Extremely Low Protein Binding

      Cobetter Hydrophilic PVDF Membrane Shows Extremely Low Protein Binding.jpg

      Test Method: 

      1. Put the membrane samples and 1mg/ml BSA solution together into the bottle, and the bottle will be put on the laboratory shaker for 1 hour vibration to make sure the protein is fully absorbed.

      2. Use an ultraviolet spectrophotometer to measure the protein value of the BSA solution before and after the membrane adsorption, then calculate the protein bound of each membrane.




      Membrane Formats

      Roll Type
      Sheet Type
      - Disc Type
      Adhesive Backing Type
      Customization





      For technical data sheet or application inquiry, you are more than welcome to contact our sales representative by sales@cobetterfilter.com or leave a message




      PVDF Cartridge Filter Solution 

      PVDF Capsule Filter Solution

      PVDF Filter.jpgAPB.jpg




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