& Filtration, LLC.
The National Institute of Occupational Safety and Health (NIOSH) is an agency established to help assure safe and healthful working conditions for working men and women by providing research, information, education, and training in the field of occupational safety and health. A large sector of this is dedicated to the approval and ratings of Respirators. Superior Felt & Filtration, LLC. has a long history and expertise in developing composites which pass N-95, N-99, N-100 and P-100 rated respirators.