Abstract:This paper describes a computer-controlled system to regulate solvent vapour concentrations in experimental inhalation devices. This system consists of an exposure chamber, a bubbler with a mass flow-meter, a monitor gas chromatograph and a computer. The frequency of automatic sampling was dependent upon the retention time of test materials. Flow-rate was corrected through a computer regulated bubbler as soon as the mean chamber concentration varied by more than 2.5% of a command level. Regulation coefficients… Show more
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