DIN EN ISO 20764-2004 石油和相关产品.水含量测定用高沸点液体试验区的准备.氮净化法
Petroleum and related products - Preparation of a test portion of high-boiling liquids for the determination of water content - Nitrogen purge method (ISO 20764:2003); German version EN ISO 20764:2003
This International Standard specifies two procedures for the preparation of test portions from petroleum and related products boiling above 200 ? which can then be used for the determination of total water content within the range of 3 mg/kg to 1000 mg/kg. The method is applicable to unused and used lubricating oils, non-aqueous hydraulic fluids and high-boiling solvents. The test portions generated by these procedures are suitable for standard Karl Fischer water content determinations, such as those described in ISO 6296 and ISO 12937.