ISO 10370:2014规定了一种方法，用于测定石油产品在规定条件下蒸发和热解后留下的0.10%（m/m）至30.0%（m/m）范围内的残炭量。 注1:残碳值是石油产品在类似降解条件下形成含碳沉积物趋势的近似值，可能有助于评估同类产品的相对成碳趋势。在这种情况下，在解释结果时应小心。 对于残留量超过0.10%（m/m）的产品，试验结果与康拉德森碳残留试验（见ISO 6615[1]）得出的结果相当，范围为0.10（m/m）至25.0（m/m）（详情见附录a）。 本国际标准也适用于主要由馏出物组成的石油产品，其残碳量可能低于0.10%（m/m）。在此类材料上，分析前，按照7.3.1和7.3.2中所述的程序制备10%（V/V）蒸馏残渣。 ISO 6245[2]定义的成灰成分和非成灰成分- 样品中存在的挥发性添加剂增加了残碳值，并包含在报告的总值中。 注2:某些馏出燃料中含有有机硝酸盐，会产生异常高的残碳值。ISO 13759可检测燃油中是否存在硝酸烷基。[3]

ISO 10370:2014 specifies a method for the determination of the amount of carbon residue, in the range 0,10 % (m/m) to 30,0 % (m/m), left after evaporation and pyrolysis of petroleum products under specified conditions. NOTE 1 The carbon residue value serves as an approximation of the tendency of petroleum products to form carbonaceous deposits under similar degradation conditions, and may be useful in the assessment of relative carbon-forming tendencies of products within the same class. In this case, care should be taken in the interpretation of results. For products which yield a residue in excess of 0,10 % (m/m), the test results are equivalent to those obtained by the Conradson carbon residue test (see ISO 6615[1]) in the range of 0,10 (m/m) to 25,0 (m/m) (for details see Annex A). This International Standard is also applicable to petroleum products which consist essentially of distillate material, and which may yield a carbon residue below 0,10 % (m/m). On such materials, a 10 % (V/V) distillation residue is prepared by the procedure described in 7.3.1 and 7.3.2 before analysis. Both ash-forming constituents, as defined by ISO 6245[2] and non-volatile additives present in the sample add to the carbon residue value and are included in the total value reported. NOTE 2 The presence of organic nitrates incorporated in certain distillate fuels will yield abnormally high values for the carbon residue. The presence of alkyl nitrate in the fuel may be detected by ISO 13759.[3]