2020年3月11日星期三

Knowledge And Application Of Disposable Syringe Filter

What areSyringe filter syringe filters used for? syringe filter, also known as needle filter, cylinder filter, cylinder filter membrane filter, etc., is used for sample prefiltration, clarification of the removal of particles, liquids and gases, etc.
What are the advantages of using a syringe filter?
The syringe filter has the advantages of simple structure, reasonable, good sealing, strong circulation ability and simple operation.Widely used in laboratories, it eliminates the need for membrane changes and filter cleaning, eliminating the need for complex and time-consuming preparation. 
Introduction to disposable syringe filters
1. The shell of the syringe filter is made of polycarbonate, polypropylene and polyethylene plastic. The upper and lower parts are welded together by ultrasonic, which can withstand high pressure without any leakage problem.
2. The syringe filter is widely used in the laboratory. It does not need to change the membrane and clean the filter, which saves the complicated and time-consuming preparation work.It is the preferred method for filtering small samples by HPLC and GC.
Disposable syringe filter classification
1. Syringe filter are divided into one-time and repeatedly, organic or drainage, specifications have Φ 13 or Φ 25, used in liquid or gas phase analysis sample filter.
2. The filter materials are: Nylon, polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), mixed cellulose (MCE), cellulose acetate (CA), Glass Fiber, polypropylene (PP), polyethersulfone (PES).
3. Filtration purpose or process classification: sterilizing filtration;Clarification filtration;Pre filtering;Except particle filtration;
4. Interface form: master bayonet;Formula socket
5. The appearance size: 4 mm13mm17mm25mm30mm33mm50mm, etc
6. Filter layer structure: monolayer membrane structure; Multilayer film structure; Capillary structure
7. Hydrophobic ptfe filter membrane: used for filtering air, gas and hydrophobic chemicals

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