pharmacy membrane filter polyethersulfone polyamide nylon nitrocellulose eptfe polysulfone glass fiber Membrane

Product Application

Membrane Filters are a thin, polymeric film made up of millions of microscopic pores. Membrane retain particles and microorganisms that exceed their pore ratings by acting as a physical barrier and capturing such particles on the surface of the membrane. Membrane Disc Filters are pre-cut membrane filters which produced using the highest quality manufacturing standards and optimized to increase efficiency, reduce cost, and expand the capabilities of your laboratory-scale applications. It gives consistent and reliable results that optimized for HPLC media preparation, pharmaceuticals and cold sterilization. We offer different kinds of membranes according to customers application needs which are available in variety of polymers, pore sizes, diameters and surface types. Most membranes can be sterilized by autoclave or non-sterile. Besides, customize is also available.

Selecting Membranes for Your Applications

1. Determine the particle size to be retained or filtered. Membrane will retain all particles equal to and larger than their
designated pore size. 

2. Assess the chemical compatibility of the membrane filter with the liquid or gas to be filtered. Consider the chemical
resistance properties of all parts that will contact the filter. 

3. Consider hydrophilic or hydrophobic membrane; temperature, flow rate, throughput, and sterilization needs.

*Nylon66/Polyamide (NY).

Hydrophilic membrane. Resistant to a range of organic solvents. Suitable for use with high pH samples. Binds
proteins, which makes it unsuitable for protein recovery applications.

* Polytetrafluoroethylene(PTFE).

Hydrophobic membrane. Resistant to organic solvents as well as strong acids and bases. Low protein binding. Low in
extracts. Main applications are the filtration of non-aqueous samples. Prior to filtering of aqueous samples the
membrane must be pre-wetted with a water-miscible organic solvent.

Hydrophilic Polytetrafluoroethylene (PTFE L).

Hydrophilic PTFE membranes are unsupported membrane that ideal for HPLC and mixtures of aqueous and organic
solvents. Use with both aqueous and organic solvents, along with their mixtures.

* Polytetrafluoroethylene( PES ).

Hydrophilic membrane. Broad solvent compatibility. Suitable for filtration of aqueous and compatible organic
solvents. Higher liquid flow than either PTFE or PVDF. Low in extracts. Low protein binding.

* Cellulose acetate (CA).

Hydrophilic membrane. Limited solvent resistance. Very low protein binding capacity, which makes it an excellent
choice for protein recovery applications. 

* Polyvinylidene difluoride (PVDF)

Hydrophobic membrane. Fast flow rate and very low protein binding. Generally compatible with most common
solvents. Ideal for protein recovery applications.

* Mixed Cellulose Esters(MCE).

Hydrophilic MCE membranes. Biologically inert mixture of Cellulose Acetate and Cellulose Nitrate membranes which
have higher protein binding than CA for most proteins. High porosity provides high flow rate. Good use for aqueous
based samples.

* Glass microfiber/glass fiber (GMF/GF).

bases. Either used as a prefilter or as a final filter.

or as a final filter.