Rabin abin rufe fuska tace barbashi (6003-2 FFP2)
Abun abun ciki
Layer Layer shine 50g masana'anta mara saƙa.Layer na uku shine audugar iska mai zafi 45g.Layer na uku shine kayan tacewa 50g FFP2.Layer na ciki shine 50g masana'anta mara saƙa.
Barbashi tace rabin abin rufe fuska wani yanki ne na kayan kariya na mutum wanda aka ƙera don dacewa da fuska sosai da kuma hana gurɓataccen iska daga shaka ta mai sawa.Ana iya kiran waɗannan na'urori masu ɗaukar numfashi ko masu tacewa facepiece respirators (FFRs).
Ingantaccen tacewa yana ɗaya daga cikin hanyoyin gwaji don kimanta abin rufe fuska.
Hanyar Gwaji- Ingantaccen tacewa (FE)
FE shine rabon ɓangarorin da kayan tacewa ke katsewa.Ana auna ta ta hanyar ƙalubalantar kayan tare da ɓangarorin sanannun girman, ɗauke da su a wani sanannen magudanar ruwa ko gudu, da auna ma'aunin ɓangarorin sama na kayan, Kofin, da ƙasa na kayan, Cdown.Shigar da barbashi ta cikin kayan tacewa, Pfilter, shine rabon maida hankali na ƙasa zuwa babban taro na sama, wanda aka ninka da 100%.FE shine madaidaicin shigar da barbashi: FE = 100% - Pfilter.Kayan tacewa wanda kashi 5% na barbashi ke shiga (Pfilter = 5%) yana da 95% FE.FE yana rinjayar abubuwa da yawa, ciki har da kayan tacewa;girman, siffa, da cajin ƙalubalen ƙalubalen, yawan kwararar iska, zazzabi da zafi, lodi, da sauran dalilai.
An san cewa FE na kayan tacewa na iya bambanta ga barbashi masu girma da siffofi daban-daban.Wannan saboda tacewa yana faruwa ta hanyar matakai na jiki da yawa - damuwa ko sieving, tasirin inertial, interception, yadawa, daidaitawa, da jan hankali na electrostatic, kuma ingancin waɗannan hanyoyin ya bambanta da girman barbashi.Girman barbashi wanda abin tacewa yana da mafi ƙanƙanta FE ana kiransa girman barbashi mafi shiga (MPPS).Da kyau, ana amfani da MPPS don gwada aikin tacewa, saboda ingancin tacewa ga duk sauran barbashi zai fi wanda aka samu tare da MPPS.MPPS ya bambanta da kayan tacewa da saurin iska ta wurin tacewa.Nazarin farko sun ba da rahoton MPPS don masu numfashi na 0.3 μm, amma ƙarin binciken kwanan nan ya nuna cewa MPPS yana cikin kewayon 0.04-0.06 μm.
