AWS F1.1:1999

This standard prescribes a procedure for sampling fumes generated by welding and allied processes. Because it is limited to health hazard evaluation, the standard is primarily concerned with sampling at the worker’s breathing zone (see 3.1). It also prescribes procedures for general area sampling of fumes. However, the sampling methods described by this standard apply only to the sampling of solid particulate matter. ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes, should be referenced for safe practices to follow when performing welding operations.