Registration number (WIID)Project No.TitleStatus
1923EN 146:1991Respiratory protective devices - Powered particle filtering devices incorporating helmets or hoods - Requirements, testing, markingAtcelts
1924EN 147:1991Respiratory protective devices - Power assisted particle filtering devices incorporating full face masks, half masks or quarter masks - Requirements, testing, markingAtcelts
1931EN 148-1:1987Respiratory protective devices - Threads for facepieces - Standard thread connectionAtcelts
2033EN 148-1:1987/AC1:1987Respiratory protective devices - Threads for facepieces - Standard thread connectionAtcelts
2035EN 148-1:1987/AC:1992Respiratory protective devices - Threads for facepieces - Standard thread connectionAtcelts
1998EN 148-1:1999Respiratory protective devices - Threads for facepieces - Part 1: Standard thread connectionAtcelts
60082EN 148-1:2018Respiratory protective devices - Threads for facepieces - Part 1: Standard thread connectionIzstrādē
1932EN 148-2:1987Respiratory protective devices - Threads for facepieces - Centre thread connectionAtcelts
2029EN 148-2:1987/AC1:1987Respiratory protective devices - Threads for facepieces - Centre thread connectionAtcelts
2027EN 148-2:1987/AC:1992Respiratory protective devices - Threads for facepieces - Centre thread connectionAtcelts
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