本试验方法包括测定原油中0.02至5.00质量或体积%的水。已知硫醇（RSH）和硫化物（S？或H2S）作为硫会干扰本试验方法，但含量低于500？g/g[ppm（m）]，这些化合物的干扰不显著。本试验方法可用于测定0.005至0.02质量%范围内的水，但尚未确定这些水平下硫醇和硫化物干扰的影响。对于0.005至0.02质量%的范围，没有精度或偏差声明。本试验方法适用于标准商用库仑卡尔费休试剂。以国际单位制表示的数值应视为标准值。 本标准不包括其他计量单位。本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全和健康实践，并确定监管限制的适用性。

This test method covers the determination of water in the range from 0.02 to 5.00 mass or volume % in crude oils. Mercaptan (RSH) and sulfide (S?or H2S) as sulfur are known to interfere with this test method, but at levels of less than 500?g/g [ppm(m)], the interference from these compounds is insignificant.This test method can be used to determine water in the 0.005 to 0.02 mass % range, but the effects of the mercaptan and sulfide interference at these levels has not been determined. For the range 0.005 to 0.02 mass %, there is no precision or bias statement.This test method is intended for use with standard commercially available coulometric Karl Fischer reagent.The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.