Special Report No. 95-08: An Investigation of the Utility of Commercial Mixtures of TRS Gases in Nitrogen for Calibrating Portable Gas Chromatographs

In an earlier NCASI study it was shown that portable gas chromatography used for workplace reduced sulfur. Gas analyses may require calibration in the field with mixtures of the individual compounds. Three treated aluminum cylinders containing mixtures of hydrogen sulfide, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide in the general 0.5 to 10 ppm concentration range were purchased from one manufacturer and analyzed with a reference method for a period of one year.