Different materials of filter membranes with different features

Hawach have Nylon, MCE, CA, PES, PVDF, PTFE, GF membrane material of membrane filters, they have different features.

Membrane material	Features
Nylon	Natural hydrophilicity No need to infiltrate before use Uniform aperture with good mechanical strength Threaded interface design
MCE	High porosity and good interception effect Not resistant to strong acids, strong alkali solutions, and most organic solvents Ideal for filtration of aqueous water solutions Unique threaded interface design
CA	Natural hydrophilicity Low protein adhesion, suitable for aqueous solution treatment No nitrates, suitable for filtration of groundwater Uniform pore structure Extensive pore size selection Retention of granulosa cells
PES	High solvent recovery rate, low residual amount; high throughput High microbial filtration capacity Unique threaded interface design Low protein adsorption, low dissolution
PVDF	Hydrophobic membrane, no moisture absorption, easy to maintain weight Temperature resistant, repeated hot pressing Chemical resistant, oxidation resistant Threaded interface design
PTFE	Excellent chemical resistance High-temperature resistance, strong acid-resistance, strong alkali, and extremely hydrophobic Both hydrophilic and hydrophobic membranes are available to meet different liquid filtration needs
GF	Natural hydrophobicity Large flux and large pollution hold ability Good mechanical strength

Generally, the PES membrane filters are very suitable for the filtration of aqueous phase samples. The high-performance PES membrane filters have the advantage of low protein adsorption, so they can reduce the loss of samples to a minimum level. Also, in comparison with other membrane filters, the PES membrane filters have a higher flow rate and better handling capacity. As a result, they are always bestsellers among all kinds of like products.

Furthermore, the high-performance PES membrane filters have a high level of consistency as well as a slight batch difference to make sure that when the laboratory worker is filtering unwanted particulate matters, new pollutes will not be produced. In a word, other than sterilization and filtration, the PES membrane filters can also be applied in the regular preparation of samples, the clarification of lysate, and combined filtering of magnetic beads and resin beads.

During sterilization and filtration, the PES membrane filters with the pore size of 0.2 μm are always solid choices. However, there are lots of other options of pore sizes including 0.1 μm, 0.45 μm, and 0.8 μm. Basically, the membrane filters with the pore sizes of 0.45 μm and 0.8 μm are mostly used in the clarification of lysate and pre-filtration.

Parameter of HAWACH Hydrophilic PTFE filter membrane

Features and applied industry
Hydrophilic PTFE filter membrane uses PTFE as raw material, biaxial stretching using the unique node fibrillation of polytetrafluoroethylene membrane, with a smooth surface, chemical resistance, breathable and impermeable, large air permeability, flame retardant, high temperature, strong acid and alkali resistance, non-toxic and other characteristics. The finished product has high filtration efficiency, which can reach 99.99%, zero-emissions; Also, it features low running resistance, fast filtering speed; long service life, reusable, thus reducing running costs.

Hydrophilic PTFE filter membrane is mainly used for anhydrous sample filtration, for caustic acid and caustic solutions, HPLC sample preparation and moving image clarification and for the filtration of flue gas in various industrial furnaces such as chemical industry, steel, metallurgy, carbon black, power generation, cement, waste incineration and so on.

Parameter
Brand: Hawach
Pcs/pack: Membrane of different diameters with different numbers in each pack. For example, 47mm with100pcs/pack and 142mm with 50pcs/pack.
Membrane material: Hydrophilic PTFE
Membrane type: surface filter
Maximum operating temperature, °C: 130
Membrane diameter: 13; 25; 47; 90; 142; 293mm
Membrane color: white
Membrane surface: glossy
Porosity%: 80

Different materials of filter membranes with different features