This, easy to read, illustrated paper, defines the current rules and protocol on Fit-testing and explores the cautions with which these should be observed.
Indeed; there are some regards in which these regulations appear inadvertently to impeded the correct Selection, Use and Maintenance of Respiratory Protective Equipment.
Fit Testing is not new. It has been an implicit duty on Employers and Workers, since 1974 and, for Confined Spaces and other special work, or risks, it has been a requirement since 1931.
Our policy is to encourage the sensible, practical betterment of occupational safety with efficiency and the least 'box-ticking' administration practicably possible. For anyone who's working day involves RPD and it management, then this is a 'must-read'.