Basic Theory of Membrane Filter

Hawach Scientific always specializes in the production of round disc membrane filters and roll membrane filters. With decades of accumulated experience in working with the most difficult problems in filtration and sterilization of liquids, gas, and other samples, advanced production equipment, and scientific management, Hawach membrane filter can meet the diverse needs of customers with excellent quality, reasonable price, and the great variety of goods. A variety of pore sizes are available to meet different microbial detection requirements. Besides, all membrane filters are aseptically and independently packaged, which avoids potential contamination in the production and packing process.

Membrane filter plays an important role in the filtration industry. It removes almost all micro-organisms and particles and makes no influence on the ingredients while doing filtration, which is very crucial in the lab or other significant experiments. No matter why you filter, for analytical, sterilization, or any other purpose, there are many kinds of membranes specifically produced to meet your needs.

Materials and types:

Membranes are made of different materials, such as PTFE, PVDF, Nylon, MCE, CA, PES, GF, PP and so on. But which material you should choose depends on what kind of material you want to filter. Two common types of membrane filters are round disc membrane filters and roll type membrane filters. Because they all can be applied infiltration and sterilization of many samples.

Membrane abbreviations:

SFCA: Surfactant-free cellulose acetate
APES: Asymmetrical polyethersulfone
PTFE: Polytetrafluoroethylene
NYL: Nylon
CN: Cellulose nitrate
CA: Cellulose acetate
GF: Glass fiber

0.45 Glass Fiber Membrane Filter
0.22 Hydrophobic PTFE Disc Membrane Filter

Attractive Aspects of Membrane Filter

Hawach membrane filter is specially designed to support different filtration needs. It is of lower extractability and high flow rates, a smooth surface, and proper structure will be most fitting for analytical usage. Diverse filter materials are used based on the properties of the fluid or gas type to improve peak filtration performance. Membranes with the high binding of proteins may clog prematurely and remove desired materials form the filtrate that you discover in the retentate.

The function of PP Membrane Filter

PP Membrane Filter supplied by Hawach Scientific is best suited for industrial processes such as gas filtration, chemical processes, and photo-resist production, and also can be used for pre-filter for samples with a high filtration speed. Hawach chooses a pure hydrocarbon material, which directly avoids disposal problems concerned with halogen content with PP membrane filter in contrast with other membrane filters such as PVDF or PES types. Perfect chemical compatibility, a high particular content, high performance, and high flow rate make it suitable for pharmaceutical, environmental and biotechnological.

Structure of Micro-porous Glass Membrane Filter

Hawach micro-porous Glass Membrane Filter is the best choice for contaminated samples and can work with most difficult samples with less hand pressure. Hawach constantly puts forward the designing and improving principles of the materials and structure of the micro-porous glass membrane filter.

Directed by these principles, the designing of technological conditions of preparing membrane filter has been done for effectively improving membrane filter performance. Meanwhile, the blend spinning and cold stretching process make most membrane filters can withstand strong acid, aggressive solvents, alcohol and so on.