Different Performance of Membrane Filter Is Decided by the Materials

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HAWACH membrane filter
Membrane filters are well received and are divided into two categories:
Roll membrane: Nylon, PTFE, PTFE-L, MCE, PES, CA, PVDF, PP
Piece membrane: MCE grid membrane, Nylon, PTFE hydrophobic, MCE, PES, CA, PVDF, GF, PP

Each kind of material has its own features, such as:
Nylon is commonly used in aqueous organic mixed solutions and not for biological experiments. The PTFE is for anhydrous sample filtration, corrosive solutions such as acid and alkali, and for HPLC sample preparation and movement like sample clarification. PES is for sterilization and filtration of enzymes and proteins, extraction and tissue culture of biological fluid samples, biological and clinical analysis, filtration, and sterilization of pharmaceutical agents.

HAWACH products
HAWACH is specialized in manufacturing different lab consumable products, such as the pipette, bottle-top dispenser, syringe filter, extraction thimble, sample vial, and other filtration products, including lab filtration and industry filtration. With years of professional experience in the filtration field, HAWACH is able to provide high-quality products with the best service.

Available in the material of Nylon, MCE, CA, CN, PES, PVDF, PTFE, PP, Glass Fiber, with pore size ranging from 0.1μm to 10μm, HAWACH filtration products have been widely used in industries like chemistry, bioscience, microelectronics, pharmacy, food & beverage, etc.

Membrane filters
Today, our attention will be paid to its membrane filter. It is a polynuclear membrane composed of tens of thousands of micropores, which is used to filter various solutions, remove bacteria and impurities. The membrane filtration principle is simple: particles larger than the pore size are filtered on the surface. Its pore sizes range from 0.1um to 10.0um.

Nylon Membrane Filter
It is hydrophilic, high protein binding capacity. Compatible with aqueous and alcoholic solutions and solvents; suitable for HPLC

PTFE Membrane Filter
There are two kinds of PTFE membrane filters–PTFE hydrophobic and PTFE hydrophilic.
Hydrophobic– resistant to organic solvents and strong acids; low protein binding capacity. It is for the filtration of anhydrous samples; for corrosive solutions such as acid and alkali; HPLC sample preparation and movement like sample clarification.

PVDF Membrane Filter
PES vs PVDF. It has wide chemical compatibility, excellent mechanical properties, strong resistance ( inferior to PTFE), fast flow rate, and low protein binding.

PES Membrane Filter
It is inherently hydrophilic, with good chemical compatibility and superior thermostability. It is for the sterilization and filtration of enzymes and proteins, the extraction and tissue culture of biological blood samples; filtration and sterilization of biological and clinical analytical agents.

CA Membrane Filter
It is hydrophilic, with very low protein binding capacity, and high physical strength. It can be used in protein and enzyme filtration; protein recovery; diagnosing cell material and clinical analysis, tissue and culture medium sterilization.

MCE Membrane Filter
It is naturally hydrophilic, a mixture of nitrocellulose and cellulose acetate. It has a higher protein binding ability than CA; it can not be used for extracting protein; high porosity makes it flow faster; suitable for base water samples.

MCE Grided Membrane Filter 3.1 micron; sterile, does not inhibit bacterial growth; color contrast is obvious–black and white (usually white lines on the black and black lines on white); white lines on the black for mold technology.