ASTM D 2029-97(Reapproved 2003) Standard Test Methods for Water Vapor Content of Electrical Insulating Gases by Measurement of Dew Point
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http://www.instrument.com.cn/bbs/download.asp?ID=22218ASTM D 6667-04 Standard Test Method for Determination of Total Volatile Sulfur in Gaseous Hydrocarbons and Liquefied Petroleum Gases by Ultraviolet Fluorescence
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http://www.instrument.com.cn/show/download/shtml/043642.shtmlASTM D 4468-85(Reapproved 2000) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and Rateometric Colorimetry
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http://www.instrument.com.cn/show/download/shtml/012695.shtml