Needle filters are widely used in laboratories. They do not require membrane replacement and filter cleaning, eliminating complex and time-consuming preparation work. They are mainly used for sample prefiltration and clarification. Filter to remove particles, liquids and gases.
Needle filter membrane is made of hydrophobic PTFE material , even at a very low pressure difference, it can ensure the unobstructed passage of moist air or other gases, while aqueous solutions cannot pass through. Its performance is exactly opposite to that of hydrophilic membrane. PTFE filter membrane has strong chemical compatibility and is capable of filtering almost all organic solvents and highly corrosive chemicals. When it is necessary to use a PTFE filter membrane to filter an aqueous solution, it must be pre-soaked with ethanol or isopropyl alcohol before the aqueous solution can be filtered.
The micropore separation process is to use the size selectivity of the membrane to the separated components under the action of fluid pressure difference to remove the particles and particles that can be intercepted by the membrane pores. Macromolecule solutes are retained, while particles or small molecule solutes that cannot be retained by the die pores pass through the membrane.
The currently independently developed Needle filter membrane series is the core material of the needle filter.Needle filter Filter membraneis a dense, smooth and porous membrane made by mechanical biaxial stretching using a special process. ptfe bubble point membrane has a fibrillar microporous structure with a porosity of more than 88%. There are 1.4 billion micropores per square centimeter, with a pore size range of 0.1μm-1μm. This film is coated on various fabrics and substrates using a special process On the membrane, it can become a new type of filter material. The membrane has small pore size, uniform distribution, large porosity, and has two categories: hydrophobic and hydrophilic. It is widely used in medicine, food, beverage, beer, chemical and other industries, so its application scope is very wide. For example, in the pharmaceutical industry, sterile raw materials and liquid medicines are filtered to remove small bacteria, in the food industry, liquor, beverages, wine, fruit wine, etc. are filtered, and in the chemical industry, organic solvents, various alcohols, and chemical reagents are filtered. Interested parties are welcome to enter the store and consult us.
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