In a previous paper, a method suitable for the measurement of hydrogen sulphide concentrations in SAGD process streams was described. The method is applicable to measuring hydrogen sulphide, non-condensable gases, and stem in lines or units containing up to 70% steam, and avoids the errors inherent in stain tube and Tutweiler measurements. This paper describes the extension of the method. It is now possible to modify the method to accommodate steam concentrations as high as 98.5% at one extreme, and very dry gases at the other. In each case, modifications of the original train that are required to obtain accurate data are described. Procedures for meeting regulatory requirements, such as hydrogen sulphide and sulphur dioxide emission measurements, are also described.