Xyoo 2020-05-09
Ua ntej tshaj plaws, cov no yog cov qauv ntawm lub qhov ncauj qhov ntswg, tsis yog lub hom phiaj ntawm lub npog ntsej muag, tsis yog cov qauv ntawm lub npog ntsej muag, tsis yog lub luag haujlwm ntawm lub npog ntsej muag, tab sis tus qauv ntawm lub npog ntsej muag, uas yog tus qauv!
| Daim ntawv pov thawj / Chav Kawm (Standard) | N95 (NIOSH-42CFR84) | FFP2 (EN 149-2001) | KN95 (GB2626-2006) | P2 (AS/NZ1716: 2012). | Kauslim 1stChav Kawm (KMOEL – 2017-64) | DS (Japan JMHLW-Daim ntawv ceeb toom 214, 2018) |
| Lim kev ua tau zoo - (yuav tsum yog ≥ X% npaum) | ≥ 95% | ≥ 94% | ≥ 95% | ≥ 94% | ≥ 94% | ≥ 95% |
| Tus neeg ua haujlwm kuaj | NaCl | NaCl thiab paraffin roj | NaCl | NaCl | NaCl thiab paraffin roj | NaCl |
| Tus nqi ntws | 85L / min | 95 L / min | 85L / min | 95 L / min | 95 L / min | 85L / min |
| Tag nrho sab hauv to taub (TIL) * - kuaj ntawm tib neeg cov ntsiab lus txhua qhov ua tau zoo | N/A | ≤ 8% leakage (tus lej lej) | ≤ 8% leakage (tus lej lej) | ≤ 8% leakage (tus kheej thiab tus lej lej) | ≤ 8% leakage (tus lej lej) | Inward Leakage ntsuas thiab suav nrog hauv Cov Lus Qhia Cov Neeg Siv |
| Inhalation kuj - max siab poob | ≤ 343 Pa | ≤ 70 Pa (ntawm 30 L / min) ≤ 240 Pa (ntawm 95 L / min) ≤ 500 Pa (clogging) | ≤ 350 Pa | ≤ 70 Pa (ntawm 30 L / min) ≤ 240 Pa (ntawm 95 L / min) | ≤ 70 Pa (ntawm 30 L / min) ≤ 240 Pa (ntawm 95 L / min) | ≤ 70 Pa (w / valve) ≤ 50 Pa (tsis muaj valve) |
| Tus nqi ntws | 85L / min | Varied – saib saum toj no | 85L / min | Varied – saib saum toj no | Varied – saib saum toj no | 40 L / min |
| Exhalation kuj - max siab poob | ≤ 245 Pa | ≤ 300 Pa | ≤ 250 Pa | ≤ 120 Pa | ≤ 300 Pa | ≤ 70 Pa (w / valve) ≤ 50 Pa (tsis muaj valve) |
| Tus nqi ntws | 85L / min | 160L / min | 85L / min | 85L / min | 160L / min | 40 L / min |
| Exhalation valve to yuav tsum tau | Cov dej ntws tawm ≤ 30 mL / min | N/A | Depressurizatio n txog 0 Pa ≥ 20 sec | Cov dej ntws tawm ≤ 30 mL / min | Kev soj ntsuam pom tom qab 300 L / min rau 30 sec | Depressurizatio n txog 0 Pa ≥ 15 sec |
| quab yuam siv | -245 Ib | N/A | -1180 Nws | -250 Ib | N/A | -1,470 Nws |
| CO2 clearance yuav tsum tau | N/A | ≤ 1% | ≤ 1% | ≤ 1% | ≤ 1% | ≤ 1% |
Lus txhais
Lim kev ua haujlwm- Lub lim raug ntsuas los ntsuas qhov txo qis ntawm cov aerosols tshwj xeeb hauv huab cua uas dhau los ntawm lub lim.
Tus neeg ua haujlwm kuaj- cov aerosol uas yog tsim thaum lub sij hawm lim kev ua tau zoo.
Total inward leakage (TIL)- tus nqi ntawm ib qho aerosol tshwj xeeb uas nkag mus rau lub ntsej muag lub ntsej muag uas tau kuaj pom los ntawm ob qho tib si lim nkag thiab lub ntsej muag to, thaum tus neeg hnav ua ib qho kev tawm dag zog hauv chav sim.
Inward leakage (IL)- tus nqi ntawm cov aerosol tshwj xeeb uas nkag mus rau lub ntsej muag lub ntsej muag ua pa, thaum tus neeg hnav ua pa li 3 feeb hauv chav sim.Qhov ntsuas aerosol loj (suav nruab nrab txoj kab uas hla) yog hais txog 0.5 micrometer.
Siab poob- Cov cua tsis kam yog raug raws li nws txav mus los ntawm qhov nruab nrab, xws li lub tshuab ua pa.
Raws li cov lus saum toj no, nws tsim nyog xav txog Tuam Tshoj KN95, AS / NZ P2, Kaus Lim Kauslim 1st Class, thiab Nyiv DS FFRs ua "sib npaug" rau US NIOSH N95 thiab European FFP2 lub tshuab ua pa, rau lim cov khoom tsis muaj roj xws li cov txiaj ntsig. los ntawm cov hluav taws kub nyhiab, PM 2.5 huab cua muaj kuab paug, volcanic eruptions, los yog bioaerosols (xws li kab mob).Txawm li cas los xij, ua ntej xaiv lub tshuab ua pa, cov neeg siv yuav tsum sab laj nrog lawv cov kev tiv thaiv kev ua pa hauv zos thiab cov kev cai lossis tshawb xyuas nrog lawv cov neeg saib xyuas kev noj qab haus huv hauv zos rau cov kev taw qhia xaiv.
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