NA 027
DIN Standards Committee Optics and Precision Mechanics
Project
Respiratory protective devices - Performance requirements - Part 3: Thread connection
Begin
2025-12-15
WI
00079192
Planned document number
DIN EN ISO 17420-3
Project number
02703504
Responsible national committee
NA 027-02-04 AA - Occupational respiratory protective devices
Responsible european committee
CEN/TC 79 - Respiratory protective devices
Responsible international committee
ISO/TC 94/SC 15/WG 23 - Filtering and supplied breathable gas RPD
