An investigation was conducted to evaluate the semiautomated chemical permeation test system by testing three specimens simultaneously against a gaseous challenge. In this investigation neat (100%) and 2000 parts per million (0.2%) ethylene-oxide (75218) and ammonia (7664417) were chosen as challenge concentrations. A total of 13 encapsulating suit materials and two glove materials were evaluated. This practical application of the test system demonstrated its utility in generating chemical permeation data, such as breakthrough time and steady state permeation rate for ethylene-oxide and ammonia gas, under immediately dangerous to life and health conditions for three specimens simultaneously. The system was effective and provided an efficient method to generate chemical permeation data for gas challenge agents. It was noted that these tests did not evaluate the integrity of the entire encapsulating suit; rather, they examined only the garment material.
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