Air-Purifying Respirator 2 : A respirator with a filter, sorbent, catalyst, or any combination of these, this removes specific contaminants, such as particulates or organic vapors, from the air when drawn through it
Navy Medicine, US Naval Hospital Okinawa Online, Glossary of Commonly Used Industrial Hygiene Terms, Attachments to Industrial Hygiene Surveys Performed by USNH Okinawa Industrial Hygiene Dept., Bureau of Medicine and Surgery, Washington, DC., USA (Not Dated). http://www.med.navy.mil/sites/nhoki/Patients/Commu nityHealth/IndustrialHygiene/Documents/Attachments /Glossary%20of%20Commonly%20Used%20Industrial%20Hy giene%20Terms.pdf (OSHA & NAVOSH- Occupn Hlth and Sfty - Amer) {168}