In medical and biological science research, accurate sample processing and analysis is crucial. This is why the use ofsyringe filtershas become very common in these fields. This microporous membrane effectively removes tiny particles from samples, providing a sterile, particle-free environment for accurate experiments and research.
Syringe filter membrane is a specially designed microporous Filter membranes are usually made of polymer materials such as polyethersulfone (PES) or polytetrafluoroethylene (PTFE). It is characterized by a very large micropore size, generally between 0.1-10μm, which can filter bacteria, viruses and other microorganisms well, while allowing water and smaller molecules to pass through.
Syringe filter membrane’s accuracy depends on its pore size and manufacturing process. For high-precision applications, such as gene sequencing and PCR amplification, filters with smaller pore sizes (e.g., 0.2-5 μm) are required. These membranes are typically made from pure polyethersulfone (PES) or polyvinylidene fluoride (PVDF) because they offer better transparency and chemical stability.
However, the smaller the pore size, the greater the resistance of the filter membrane, so higher pressure is required to ensure flow. This is why when using membrane filters for fluid handling, special attention needs to be paid to the design and operating conditions of the equipment.
Syringe filter membrane requires proper cleaning and maintenance after use to ensure that its performance is not affected. Membranes should be cleaned first with an oil-free, grease-free solution to avoid dissolving any residue that might clog the pores. The filter membrane should then be rinsed with distilled or sterile water and dried with sterile air or nitrogen.
In addition, the filter membrane should be stored in a sealed package to avoid exposure to moisture or contamination in the air.
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