Due to temperature deviations in the four seasons and changes in the living environment, the weather is hot and cold. If you are not careful, you are likely to experience minor symptoms such as discomfort. Generally speaking, only You need to take some medicine and rest to restore your health quickly, but if it is more serious, you will need injections or infusions. Careful friends may find a small disc in the small infusion tube, then this disc is the polytetrafluoroethylene hydrophilic filter membrane material.
Before the medicinal solution is injected into the human body’s veins, a medicinal solution filter needs to be used to remove particles and bacteria from the prepared medicinal solution. For filtration of fluids, etc., on the premise of meeting the infusion requirements, smaller filter pore size and higher filtration efficiency mean more reliability.
Particles larger than 10μm account for only about 1% of the medicinal solution, and particles smaller than 10μm account for about 98%. The larger filter pore size of the blood transfusion device is the filtration It does not remove these infusion particles, so it is not suitable for infusion. The filter membrane used in the precision filtration infusion set is a nuclear pore membrane, which has a double-layer filter medium, high filtration accuracy, and strict classification of pore sizes. The appropriate pore size can be selected according to clinical needs: 5μm, 3μm, 2μm, 1.2μm, 0.2μm . Polytetrafluoroethylene hydrophilic filter membrane can effectively filter infusion particles to ensure patient infusion safety.
In the past, people thought that the smallest bacteria in the world were Serratia marcescens (small diameter about 0.5μm). When the pore size of the liquid filter membrane was as small as When it is enough to completely intercept/filter Serratia marcescens, the pore size of the membrane/filter with this pore size is nominally 0.45 μm.
Later, it was discovered that Pseudomonas defectives (a small diameter of about 0.3μm, now considered a small bacterium), and the 0.45μm filter cannot retain it /Filter, so people further changed the production process of the filter membrane. When the filter membrane can completely intercept/filter out Pseudomonas deficiencies, people define the pore size as 0.22μm (that is, half of 0.45μm). Some At that time, for the convenience of use, it was said to be 0.2μm. Under the current technology, 0.22μm and 0.2μm are the same thing, and there is no one who is more precise.
The independently developed and produced polytetrafluoroethylene hydrophilic filter membrane is the core material of medicinal liquid filtration infusion filters, with a 0.1 Pore sizes of microns, 0.22 microns, 0.45 microns, and 1 micron have strong hydrophilicity, high flow rate, high flux, high dirt holding capacity, good pollution resistance, good temperature resistance, and strong chemical stability. Polytetrafluoroethylene hydrophilic filter membrane is widely used in many fields such as highly corrosive solvents, infusion filtration, leukocyte filtration, liquid bacterial treatment, protein separation, etc. It has been widely praised by many customers. Interested parties are welcome to visit the store for consultation and purchase.
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