Abstract: Apparatus and method for determining the asbestos fiber release potential of asbestos-containing compositions comprises an impact member which is repeatedly impacted with a selected area of the asbestos-containing composition and in which asbestos fibers which become airborne as a result of the impacts are collected by means of a collector system disposed around the area of impact. The invention has particular utility for the in situ testing of asbestos-containing fire-retardant compositions which have been previously applied to structural elements of buildings.

Abstract: A support system for a gas sampler for collecting samples of gas from a plurality of laterally arranged ports and including a support rail extending outwardly from the ports to support the gas sampler for movement toward and away from said ports, an auxiliary support for the outer end of the supporting rail, a pair of laterally extending tracks and slidable couplings connecting the ends of the rail and auxiliary support to the tracks to facilitate moving the gas sampler from port to port.