CAN/CGSB-3.0 No./N° 18.5-M89

Intended for the semi-quantitative (i.e. ± 25%) determination of ethyl mercaptan odourant (within the range of 5 to 85 mg/L) in liquid propane. It is particularly appropriate to confirm that recently stenched propane is indeed odourized to the required level. The method is intended for field application, and may be suitable for use by non-laboratory personnel after suitable training. A gas chromatographic method should be used for more precise, quantitative determination of ethyl mercaptan in propane.