Lub ntsej muag kho mob feem ntau hu uaSurgical Mask or Txheej Txheem Maskua lus Askiv, thiab kuj tseem hu uaDental Mask, Isolation Mask, Medical Face Mask, etc. Qhov tseeb, lawv yog tib yam.Lub npe ntawm daim npog qhov ncauj tsis qhia qhov kev tiv thaiv zoo dua.

Txawm hais tias ntau lub npe lus Askiv tau hais txog kev kho mob lub ntsej muag, feem ntau muaj ntau yam sib txawv.Cov ntsej muag phais ib txwm siv hauv chav ua haujlwm yog "Tie-On” cov ntaub qhwv (sab laug hauv daim duab saum toj no), ntau yam hu ua lub ntsej muag phais.Cov qhov ncauj qhov ntswg phais kuj tsim nrog cov hlua.Rau cov neeg zoo tib yam, "Earloop” pob ntseg nuv (txoj cai hauv daim duab saum toj no) daim npog kho mob yuav siv tau yooj yim dua.

Cov qauv zoo rau kev kho mob qhov ncauj qhov ntswg

Kev kho mob qhov ncauj qhov ntswg hauv Tebchaws Meskas tau raug pom zoo los ntawm FDA thiab yuav tsum muaj qee yam kev pom zoo, ua kua dej, cov ntaub ntawv flammability, thiab lwm yam, kom ua tau raws li cov qauv.Yog li dab tsi yog cov txheej txheem kev cai rau kev kho mob lub ntsej muag phais?FDA xav kom lub ntsej muag kho mob muab cov ntaub ntawv kuaj hauv qab no:

• Bacterial Filtration Efficiency (BFE / Bacterial Filtration Efficiency): qhov taw qhia uas ntsuas lub peev xwm ntawm lub qhov ncauj qhov ntswg kho mob los tiv thaiv kev kis kab mob hauv cov tee dej.Txoj kev kuaj ASTM yog ua raws li cov tshuaj lom neeg aerosol nrog qhov loj ntawm 3.0 microns thiab muaj Staphylococcus aureus.Tus naj npawb ntawm cov kab mob tuaj yeem lim tawm los ntawm daim npog kho mob.Nws yog qhia raws li feem pua ​​(%).Qhov feem pua ​​​​siab dua, lub peev xwm ntawm lub npog ntsej muag muaj zog dua los thaiv cov kab mob.
• Particulate Filtration Efficiency (PFE / Particle Filtration Efficiency): ntsuas cov nyhuv lim dej ntawm lub qhov ncauj qhov ntswg kho mob ntawm cov kab mob me me (tus kab mob loj) nrog qhov pore loj ntawm 0.1 microns thiab 1.0 microns, kuj tau hais tias feem pua ​​​​(%), qhov feem pua ​​​​siab dua, qhov zoo dua lub ntsej muag lub peev xwm los thaiv kab mob.FDA pom zoo kom siv cov khoom tsis muaj nruab nrab 0.1 micron latex rau kev kuaj, tab sis cov khoom loj dua tuaj yeem siv rau kev sim, yog li ua tib zoo saib seb "@ 0.1 micron" yog cim tom qab PFE%.
• Dej Resistance: Nws ntsuas lub peev xwm ntawm lub ntsej muag phais kom tiv thaiv kev nkag mus ntawm cov ntshav thiab cov kua hauv lub cev.Nws tau qhia hauv mmHg.Tus nqi siab dua, qhov kev tiv thaiv zoo dua.Txoj kev kuaj ASTM yog siv cov ntshav tsim los tshuaj tsuag ntawm peb theem siab: 80mmHg (venous pressure), 120mmHg (arterial pressure) lossis 160mmHg (muaj peev xwm siab uas yuav tshwm sim thaum raug mob lossis phais) kom pom tias lub npog ntsej muag tuaj yeem thaiv cov ntws ntawm cov kua los ntawm txheej txheej mus rau sab hauv.
• Siab sib txawv (Delta-P / siab sib txawv): ntsuas cov huab cua tsis kam ntawm lub qhov ncauj qhov ntswg kho mob, pom qhov muag pom kev ua pa thiab kev nplij siab ntawm lub qhov ncauj qhov ntswg kho mob, hauv mm H2O / cm2, tus nqi qis dua, lub ntsej muag breathable ntau dua.
• Flammability / nplaim taws (flammable): Vim tias muaj ntau lub zog hluav taws xob siv hluav taws xob kho mob hauv chav ua haujlwm, muaj ntau qhov muaj peev xwm ignition, thiab cov pa oxygen ib puag ncig txaus, yog li daim npog phais yuav tsum muaj qee yam nplaim taws.

Los ntawm kev xeem BFE thiab PFE, peb tuaj yeem nkag siab tias lub ntsej muag kho mob zoo tib yam lossis lub ntsej muag phais muaj qee yam cuam tshuam raws li qhov ncauj qhov ntswg tiv thaiv kab mob, tshwj xeeb tshaj yog tiv thaiv qee cov kab mob uas feem ntau kis los ntawm cov tee dej;tab sis lub qhov ncauj qhov ntswg kho mob tsis tuaj yeem lim cov khoom me me hauv huab cua.Nws muaj kev cuam tshuam me ntsis ntawm kev tiv thaiv kab mob thiab kab mob hauv huab cua uas tuaj yeem raug tshem tawm hauv huab cua.

ASTM Cov Qauv rau Kev Kho Mob Cov Qhov Ncauj Kho Mob

ASTM Suav yog hu ua American Society for Testing and Materials.Nws yog ib lub koom haum tsim qauv thoob ntiaj teb loj tshaj plaws hauv ntiaj teb.Nws tshwj xeeb hauv kev tshawb nrhiav thiab tsim cov khoom tshwj xeeb thiab cov qauv kev sim.FDA tseem lees paub ASTM cov qauv kev sim rau lub ntsej muag phais.Lawv raug sim siv cov qauv ASTM.

ASTM qhov kev ntsuam xyuas ntawm lub ntsej muag phais kho mob tau muab faib ua peb theem:

• ASTM Qib 1 Tsawg Barrier
• ASTM Qib 2 Nruab Nrab Barrier
• ASTM Qib 3 High Barrier

Nws tuaj yeem pom los ntawm cov saum toj no uas ASTM tus qauv xeem siv0.1 micron haismus ntsuam xyuas cov filtration efficiency ntawmPFEcov khoom.Qhov qis tshajQib 1daim npog qhov ncauj kho mob yuav tsum muaj peev xwmlim cov kab mob thiab Cov kab mob nqa hauv 95% lossis ntau dua ntawm cov tee dej, thiab siab duaQib 2 thiab Qib 3daim npog qhov ncauj kho mob taulim cov kab mob thiab cov kab mob nqa los ntawm 98% lossis ntau dua ntawm cov tee dej.Qhov sib txawv loj tshaj plaws ntawm peb theem yog cov kua dej tsis kam.

Thaum muas lub qhov ncauj qhov ntswg kho mob, cov phooj ywg yuav tsum saib cov qauv ntawv pov thawj uas sau rau ntawm lub ntim, cov qauv twg raug kuaj, thiab cov qauv twg tau ua tiav.Piv txwv li, qee lub qhov ncauj qhov ntswg yuav tsuas hais tias "Ua tau raws li ASTM F2100-11 Qib 3 Cov Qauv", uas txhais tau hais tias lawv ua tau raws li ASTM Qib 3 / High Barrier tus qauv.

Qee cov khoom kuj tseem qhia tshwj xeeb rau txhua qhov ntsuas tus nqi.Qhov tseem ceeb tshaj plaws los tiv thaiv tus kab mob yogPFE% @ 0.1 micron (0.1 micron particle filtration efficiency).Raws li rau cov kev ntsuas uas ntsuas cov dej tsis kam thiab flammability ntawm cov ntshav txaws, Txawm hais tias qib siab tshaj plaws ntawm cov qauv tsis tshua muaj txiaj ntsig.

CDC Anti-epidemic Mask Description

Kho mob phais qhov ncauj qhov ntswg: tsis yog tsuas yog tiv thaiv tus neeg hnav los ntawm kev kis kab mob, tab sis kuj tiv thaiv tus neeg hnav los ntawm cov tshuaj tsuag thiab cov kua txaws, thiab muaj kev tiv thaiv cov kab mob kis los ntawm cov khoom loj ntawm cov tshuaj tsuag;tab sis lub ntsej muag kho mob zoo tib yam tsis tuaj yeem lim cov me me Particulate aerosol tsis muaj kev tiv thaiv kab mob hauv huab cua.

N95 qhov ncauj qhov ntswg:tuaj yeem thaiv cov khoom loj ntawm cov tee dej thiab ntau dua 95% ntawm cov khoom tsis muaj roj me me aerosols.Kev hnav NIOSH daim ntawv pov thawj N95 qhov ncauj qhov ntswg tuaj yeem tiv thaiv cov kab mob hauv huab cua thiab tuaj yeem siv tau raws li qib qis tshaj ntawm cov npog ntsej muag tiv thaiv kab mob xws li TB tuberculosis thiab SARS Txawm li cas los xij, N95 lub qhov ncauj qhov ntswg tsis tuaj yeem lim roj lossis muab cov pa oxygen, thiab tsis haum rau cov pa phem lossis qis. oxygen ib puag ncig.

Surgical N95 Qhov ncauj qhov ntswg:ua tau raws li N95 particle filtration qauv, tiv thaiv cov tee dej thiab cov kab mob hauv huab cua, thiab thaiv cov ntshav thiab cov kua hauv lub cev uas yuav tshwm sim thaum phais.FDA pom zoo rau daim npog qhov ncauj.