CFR > Title 42 > Chapter I > Subchapter G > Part 84 > Subpart K CFR > Title 42 > Chapter I > Subchapter G > Part 84 > Subpart K – Air-Purifying Particulate Respirators Current as of: 2024 | Check for updates | Other versions § 84.170 Air-purifying particulate respirators; description § 84.171 Required components and attributes § 84.172 Airflow resistance test § 84.173 Exhalation valve leakage test § 84.174 Filter efficiency level determination test–non-powered series N, R, and P filtration § 84.175 Instantaneous filter efficiency level determination test–PAPR series HE, PAPR100-N, and PAPR100-P filtration § 84.176 Fit test–PAPR classes HE and PAPR100 § 84.177 Total noise level test–PAPR classes HE and PAPR100 § 84.178 Breath response type, airflow resistance test–PAPR classes HE and PAPR100 § 84.179 Silica dust loading test–PAPR series HE filtration § 84.180 Particulate loading test–PAPR series PAPR100-N and PAPR100-P filtration § 84.181 Communication performance test–PAPR class PAPR100 Need help with an employment contract?Have it reviewed by a lawyer, get answers to your questions and move forward with confidence.Connect with a lawyer now Ask a question, get an answer ASAP!