67MM POLARIZER FILTER

srijeda, 07.12.2011.

HEPA FILTER TEST : FILTER TEST

HEPA FILTER TEST : HOW TO BACKWASH POOL FILTER.

Hepa Filter Test

hepa filter


A high efficiency particulate air , or HEPA , filter is a type of high-efficiency air filter.


Filter that traps airborne particles by forcing air through very dense mesh.


(HEPA Filters) Class of air filters which meet a minimum performance level of 99.97% on 0.3 microns efficiency. (This is only an efficiency test and may not show small pin holes or leaks.) In the cleanroom market HEPA is normally rated at 99.

test


put to the test, as for its quality, or give experimental use to; "This approach has been tried with good results"; "Test this recipe"


Take measures to check the quality, performance, or reliability of (something), esp. before putting it into widespread use or practice


Reveal the strengths or capabilities of (someone or something) by putting them under strain


Give (someone) a short written or oral examination of their proficiency or knowledge


trial: trying something to find out about it; "a sample for ten days free trial"; "a trial of progesterone failed to relieve the pain"


any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc; "the test was standardized on a large sample of students"