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Filtration efficiency of the logo
2008-10-27 15:31:53
(has been browse 599 times)
The development of Europe and the United States Americans engage in a first filter efficiency test method standards, was easily forgotten Gaoge the efficiency of the logo is simple. 70 era, Western Europe, the U.S. pilot study ways to increase the way the EU-logo, will be divided into 14 different efficiency levels, respectively, with EU1 ~ EU14 to that. English is the EU, saying that "Europe." Europeans also felt wrong in the early 1990s, and staged a G ~ F ~ H ~ U classification. With the German, Swiss is modeled on the standard, under which the fair. EU very convenient, very often said that Americans EU. Then one day the Americans to engage in the efficiency of their identity, the European idea, of course, they do not have to. In 1996, the United States C ~ L ~ M ~ H ~ UH efficiency of the sub-file out. Chinese case Internal stresses "high, medium and coarse," and later added a "sub-efficient" and "high efficiency" two respectively. It simply comes to people's mind, so popular for many years. It now appears that the sub-file rough spots. Clean community predecessors retired, the office busy with their respective businesses, the youngest not yet a trend yet, no one to amend the standard. Schroders, Inc. (net of the original tobacco plant) in Europe in 1993 to try to use the G ~ F ~ H ~ U, a good effect. Subsequently, this identification system quickly in the domestic epidemic. At present, "High crude" is still the most popular, accounting for the second is the G ~ F ~ H ~ U, is going after the EU, the United States as a result of new methods they have they done little to use and that there was no epidemic. Products are diverted to countries in the Chinese market, people unable to perfect the efficiency of the system, had no choice but to listen to the foreigner. In China to buy 85% of the efficiency of a colorimetric filter may be a variety of efficiency logo: Ashrae 85%, high efficiency, F7, EU7, F85, NBS 85%, fine filter, M13. High-performance filters People in the use of high-performance filters, the pilot insisted on the value and efficiency of the method in conjunction with standard products, such as: 99.97% (0.3 mm DOP), MPPS 99.9995%. In most cases, people simply do not use the logo efficiency of the system, High-efficiency filter test is a major selling point for this, people like to make the complex more efficient. Countermeasures Countries in the world can be acceptable to all walks of life, as well as the efficiency of the logo program is not yet exist, it is difficult for the next few years appear. For manufacturers, which used to identify products that sell well with that; for the technical staff, convenience of sort of marking up the exchange of the kind used. God is the user, what you like, someone else will be in accordance with the requirements of your label.

 

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