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

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. 


 

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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

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