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Membrane Filter PTFE PVDF PES

Membrane Filter PTFE PVDF PES

Polyethersulfone (PES) membranes are hydrophilic, low protein binding and stable in alkaline pH. It is recommended for aqueous applications and for biological samples. PTFE is the membrane of choice for use with the aggressive solvents, liquids and gases that can attack other membranes. It is resistant to most acids, alkalis and solvents. We recommend using our hydrophilic PVDF in applications such as multi-plexed bead-based assays, the filtration of dilute protein samples, cold and hot water for injection (WFI), chemicals, aggressive solvents and sanitizing agents.

PES 

Polyethersulfone (PES) membranes are hydrophilic, low protein binding and stable in alkaline pH. Available in a 0.8µm pore size, the PES membrane is recommended for aqueous applications and for biological samples. They are also an alternative choice for users requiring a filter that exhibits extremely low protein binding characteristics. This kind of membrane is imported from MEMBRANA company in Germany.


Data


PES  0.45

PES 0.2

Membrane thickness(um)

114.3-165.1

129.5-162.6

Bubble Point

2.48-3.31

3.65-4.76

Typical Water Flow Rate(ml/min/cm2,0.7bar  10Psi)

38-100

19.3-34.6


PTFE 

PTFE membranes are particularly suitable for preparing samples for HPLC analysis. The hydrophobic nature of the membrane also has applications for air and gas sterilization. The membrane is laminated onto a non-woven polypropylene support web for improved strength and handling and can be used at temperatures up to 150ºC.

PTFE is the membrane of choice for use with the aggressive solvents, liquids and gases that can attack other membranes. It is resistant to most acids, alkalis and solvents. 


Applications

One of the major applications for the PTFE filter is the clarification of corrosives, solvents and aggressive fluids. This includes the important requirement in HPLC analysis for sample filtration where any solid particles can cause permanent damage to the column. The 0.45µm pore size is normally used. 


Data


PTFE  0.45

PTFE 0.2

Membrane thickness(um)

198.1-269.2

203.2-330.2

IPA Bubble Point (psi)

6.1-19.6

16.0-26.0


Hydrophilic PVDF (Polyvinylidene Fluoride)

Hydrophilic PVDF (Polyvinylidene Fluoride) membranes are commonly used in a variety of general filtration and sample preparation applications. For sterile and general filtration applications, our unique, modified hydrophilic PVDF (Polyvinylidene Fluoride) membrane with ultra low binding properties, broad chemical and temperature resistance, and high flow rates is an excellent choice. We recommend using our hydrophilic PVDF in applications such as multi-plexed bead-based assays, the filtration of dilute protein samples, cold and hot water for injection (WFI), chemicals, aggressive solvents and sanitizing agents.


For the filtration and degassing of the solvent-based mobile phases, our portfolio includes an HPLC-certified material available in 0.2 and 0.45um, which provides assurance that the filter material will not add artifacts or extractables to the samples for analysis. The chemical compatibility of the membrane includes aggressive acids and alcohols making it useful for the filtration of both aggressive and non-aggressive solvent-based mobile phases. We do not recommend using this membrane for the filtration of acetone, DMSO, or based>6N.


Data 

China

PVDF  0.45

PVDF  0.2

Membrane thickness(um)

7-200

7-200

Bubble Point

0.6bar

1.2 bar

Water Flow Rate(ml/min at 2.1bar)

12

8


Millipore

PVDF  0.45

PVDF  0.2

Water Bubble Point

0.6bar

2-3.5 bar

Water Flow Rate(ml/min at 2.1bar)

12

6

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