ASTM Qib 1: Zoo tagnrho rau cov txheej txheem uas muaj kev pheej hmoo ntawm cov kua dej tsawg (tsis muaj txaws lossis tshuaj tsuag). ASTM Theem 2: Zoo tagnrho rau cov txheej txheem uas muaj kev pheej hmoo ntawm cov kua dej tawm (txiav lossis txau tuaj yeem tsim tau).
Puas Qib 1 lossis Qib 3 daim npog ntsej muag zoo dua?
Level 1 lub qhov ncauj qhov ntswg feem ntau suav tias yog qhov thaiv qis. Lawv tau tsim los rau cov txheej txheem nrog cov kua dej tsawg, ntshav, raug aerosol lossis tshuaj tsuag. … Thaum kawg, qib 3 daim npog qhov ncauj yog suav tias yog qhov thaiv siab. Lawv zoo tagnrho rau cov txheej txheem nrog cov kua dej nruab nrab lossis siab, ntshav, aerosols lossis tshuaj tsuag.
Lub ntsej muag 3 yog dab tsi vs N95?
Qib 3 lub qhov ncauj qhov ntswg tau piav qhia tias yog FDA-pom zoo-hnyavhauv thaj chaw uas muaj lus nug txog cov ntaub npog ntsej muag, lossis txawm tias yog lub teeb-hnyav rau kev kho mob-qib Lub tshuab ua pa zoo li N95.
Puas Qib 2 lossis Qib 3 daim npog ntsej muag zoo dua?
Qib Ob: Kev tiv thaiv kev tiv thaiv ib puag ncig. Siv rau qib qis mus rau nruab nrab ntawm aerosols, tshuaj tsuag thiab / lossis kua dej. Qib Peb: Kev tiv thaiv ntau tshaj plaws. Siv kom muaj kev pheej hmoo ntawm cov kua, tshuaj tsuag thiab/los yog kua.
Puas yog ASTM Qib 3 daim npog ntsej muag?
ASTM Qib 3 yog FDA qhov ntsuas siab tshaj plaws rau kev kho mob thiab phais lub ntsej muag. Lub npog ntsej muag no muaj qhov kho qhov ntswg qhov ntswg thiab cov pob ntseg tsis-latex rau kev hnav yooj yim thiab ntxiv kev nplij siab.
