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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, excellent 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 excellent 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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