Full face masks for respiratory protective devices with the EN 136:1998/AC:1999 rating are tested for safety, breathing comfort, clear vision, and preventing unfiltered air from entering. This ensures the mask provides reliable protection and is safe and effective in hazardous environments.

Respiratory protective devices and filters with the EN 148-1:2018 rating are tested for the secure and reliable connection of threads between the facepiece and filter. This ensures a proper seal and robust attachment, providing effective protection against hazardous air.