Home » Laboratory » Membrane Filters » Hydrophobic PTFE Membrane Filters Lab Disc Filters 25/50/100 pcs/pk
0.45um hydrophobic PTFE disc membrane filter, diameter 47mm
0.45um hydrophobic PTFE disc membrane filter, diameter 47mm

Hydrophobic PTFE Membrane Filters Lab Disc Filters 25/50/100 pcs/pk

In stock
Part No. MFPT-4547
$24.00 USD
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*Not for medical use

Cobetter hydrophobic PTFE membrane filters has broadest chemical compatibility and inertness and is mainly used for filtration of corrosive chemicals such as strong acid and alkali, finding applications in numerous industries, including pharmaceutical, biotech, food and beverage, and environmental monitoring.

Specifications

Materials Membrane PTFE
Wettability Hydrophobic
Color White
Physical Properties Filter Diameter 13/25/47/60/90/100/142/150/293 mm
Pore Size 0.1/0.22/0.45/1.0/3.0/5.0 μm
Maximum Operating Temp. 140°C
pH Range 1.0 – 14.0
Sterility Delivery Condition Nonsterile
Package Pack Size 100/pk, 50/pk, 25/pk

 

Performance

Pore Size Average Water Breakthrough (water 20°C) Air Flow Rate (@100ml*1in²*4.88in.water) Thickness (μm)
0.1 μm ≥450KPa ≤35s 200±60
0.22 μm ≥300KPa ≤35s 210±70
0.45 μm ≥150KPa ≤15s 210±80
3.0 μm ≥80KPa ≤10s 210±80
5.0 μm ≥30KPa ≤6s 250±50

Features

  • Naturally hydrophobic
  • Biologically and chemically inert
  • Strong chemical compatibility with pH range 1-14

Applications

  • Aerosol sampling
  • Air venting filtration
  • Filtration of strong acids and aggressive solutions
  • HPLC and organic solvent filtration

How to Choose a Membrane Filter

Medium, buffer filtration ---------- PES membrane

Low protein adsorption filtration --- PVDF membrane

Solvent mixture ------------------ Nylon or Hydrophilic PTFE membrane

Non-polar (hydrophobic) solution -- Hydrophobic PTFE membrane

Polar (hydrophilic) solution -------- Nylon membrane

Corrosive solution ---------------- Hydrophobic PTFE membrane

Gas filtration --------------------- Hydrophobic PTFE membrane

Q: What materials and pore sizes are available for Cobetter membrane filters?

Membrane Materials available in: PES, PTFE, PVDF, Nylon, PP, MCE
Pore sizes: 0.22 μm, 0.45 μm, 0.8 μm, 1.0 μm, 3.0 μm, 5.0 μm, 8.0 μm, 10.0 μm
Diameters: 13 mm, 25 mm, 47 mm, 60 mm, 90 mm, 100 mm, 142 mm, 150 mm, 293 mm

Q: Do Cobetter membrane filters have a support layer? Should the front and back sides be distinguished during use?

Cobetter PTFE and Nylon membrane filters come with a support layer, while PES, PVDF, PP, and MCE membranes do not.

The membrane packaging box includes instructions indicating that the feed side should face upward.

Q: Are Cobetter PP membrane filters hydrophilic or hydrophobic? Do they have a support layer?

Cobetter provides both hydrophilic PP membranes and hydrophobic PP membrane filters. Hydrophilic PP membranes are available in three pore sizes: 0.22 μm, 0.45 μm, and 1.0 μm.

Cobetter PP membrane filters are made of pure PP material and do not have a support layer.

Q: Are Cobetter Nylon membranes made of 100% pure nylon material?

Cobetter Nylon membrane filters are not made of 100% pure nylon material. They consist of a nylon coating layered on a polyester support.

Q: Are Cobetter membranes uniform in thickness and pore Size distribution?

Cobetter membranes employ precision manufacturing processes and stringent quality control to ensure uniform membrane thickness and highly consistent pore size distribution. For specific technical parameters of each membrane, please contact our customer support team.

Q: How are Cobetter membrane filter packaged? And does each box include parchment paper?

Cobetter membrane filters are packaged in plastic boxes. The quantity per box varies with the diameter, e.g., 47 mm are packaged as 50/pk, while 90 mm are packaged as 25/pk.

The placement of the parchment paper differs by membrane material:
PES/PVDF/Pure PTFE: Each membrane is individually interleaved with a sheet of parchment paper.
Nylon//MCE/PP/Laminated PTFE: Only the top and bottom of each stack are lined with parchment paper.
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