Maske ea ho Buoa e lahloang le ea ho buoa sefahleho Maske ea ts'ebetso ea ASTM Level 3 e fana ka mokoallo oa 'mele oa 3 ho sireletsa ea e apereng maro, tšilafalo, peo e phofshoana, lerōle le likaroloana tse ling tse tsoang moeeng tse hlahlojoang ka liperesente tse 98 tsa BFE. Limaske tse boima bo bobebe li hahiloe ka masela a se nang lesela a lumellanang le letlalo le litheko tse bobebe tsa tsebe ka lihora tse ngata tsa ho apara hantle.