Medium is not only the basic material that provides cell nutrition and promotes cell proliferation, but also the living environment for cell growth and reproduction. There are many types of culture media, which can be divided into natural culture media, synthetic culture media, and semi-synthetic culture media according to the source of raw materials.
Compared with filtration, high-temperature filtration of bacterial cells has less work intensity and lower cost, but it can easily cause the loss of nutrients. , and it is easy to cause secondary contamination during multiple sample additions (glutamine solution, sodium bicarbonate solution, etc.).
However, most culture media use microporous filter membranes with a pore size of 0.1 to 0.2 μm for filtration, and this has become the development direction of culture media, which can reduce Reduce the nutrient loss of the culture medium. In addition to 0.45um microporous filter membrane, various pore sizes such as 0.1μm and 0.22μm are also available. The currently self-developed PTFE bubble point filter material is the core material for culture medium filtration and has the characteristics of high retention rate, high flow rate, low pressure difference and wide chemical compatibility.
0.45um microporous filter membrane It has a fibrillar microporous structure, a porosity of more than 88%, and 1.4 billion particles per square centimeter. There are micropores with a pore size range of 0.1μm-0.5μm. This film is coated on various fabrics and substrates with a special process and can become a new filter material. The membrane has small pore size, uniform distribution and large porosity. It can maintain air While circulating, it can filter all dust particles including small bacteria to achieve purification and ventilation.
It is a 0.45um microporous filtration membrane material manufacturer that specializes in R&D, production and sales. Our company is different from other manufacturers. Our company can according to the user’s requirements. By optimizing the key technical parameters of speed ratio, pressure ratio, operating temperature and other parameters, online control of air permeability, thickness and porosity can be achieved based on the ratio and pore-forming medium to meet your different requirements. Interested parties are welcome to enter the store for consultation.
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