Dissolved Gas Using D-19 ASTM Method

In order to test for possible dissolved gas contamination, most laboratories refer to a standard operating procedure entitled “RSK-175”.  This procedure calls for static headspace sampling of the water samples and calculating the amount of dissolved gas using Henry’s Constant.  However, as RSK-175 is standard operating procedure and not a formal method, interpretations can vary.  In order to address this issue, a formal method is currently being written by American Society for Testing and Materials (ASTM) Committee D-19.  This application will test for dissolved gases using the procedures established in the ASTM method.