3M S-657 Hood Assembly (US) Half Face Respirators construction sites
Baker’s notes & crumb story
Description
3M S 657 Hood Assembly (US) Half Face Respirators construction sites construction sites helps provide respiratory protection from ammonia and methylamine at concentrations up to 10 times the Permissible Exposure Limit (PEL) with half facepieces or 50 times PEL with full facepieces