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Abstract

This paper systematically studies the technical characteristics and application value of separator-free high-efficiency air filters in laboratory air purification systems. By analyzing their structural features, performance parameters, economic performance and practical application cases, combined with the latest domestic and foreign research results, the applicability and advantages of this type of filter in laboratory environments are comprehensively evaluated. The paper details the comparison of technical indicators of different types of filters, provides specific selection suggestions and maintenance plans, and verifies their technical and economic value through practical cases.

Keywords: Separator-free high-efficiency air filter; Laboratory purification; Air filtration; HEPA; Clean technology

HEPA filter efficiency η requires no less than what value? Countries have their own regulations, and with the different test methods without full agreement.

Users often complain filter life is too short, there are three main reasons for this: First of filter material in the filter area per unit area is too small or too small dust capacity: Second, the pre-filter filtration efficiency is low : Third, the service life of the filter user expectations too high. 

Current HEPA filter efficiency from 99.9% ~ 99.999999% are available for adoption. Rational use of HEPA filter face velocity brings efficiency and overall economic effect. 

The same material filters, high efficiency and its resistance is also large, high prices have reduced and vice versa, if the wind is resistance to change, efficiency and volume changes required by the specific circumstances of a reasonable choice.