In most countries, hearing protectors are required by law to be tested and labeled in a specific way. The idea is that by using a standardized measurement method and a straightforward, one-number rating, it should help users decide which hearing protector to choose. However, it turns that one number often doesn’t tell the whole story.

In many of today's workplace environments, a respirator and a proper respirator fit test are critical components of the employee respiratory protection program.

When your safety and your life depend on it, you need your equipment to fit properly. This is especially true in the workplace. Improper fit may prevent workers from performing their job duties safely and effectively.