A new report published by the U.K.’s Health and Safety Executive (HSE) details the efforts of researchers to develop a system that would generate vapor from selected volatile organic compound (VOC) liquids at higher concentrations than can be commercially supplied in gas cylinders. Such a system would help researchers investigate the accuracy of photo-ionization detectors (PIDs) at high concentrations of VOCs.
According to the report, researchers were “moderately successful” in creating a dynamic system of vapor production, which produced linear calibrated, repeatable, higher vapor concentrations of toluene and xylene than those commercially available in cylinders. At the higher concentrations of xylene, researchers found that a PID was accurate within one percent of the actual generated concentration, which was monitored using a flame ionization detector (FID).
Read the full report on HSE’s website.