ISO 6246:2017规定了测定航空燃料现有胶质含量和车用汽油或其他挥发性馏出物胶质含量的方法。它包括测定含有乙醇(体积分数高达85%)和醚类氧化物及沉积物控制添加剂的产品。
对于测定汽车乙醇(E85)燃料中的胶质含量,没有精确数据(见14.1)。
对于非航空燃料,还描述了测定残渣中庚烷不溶部分的程序。
ISO 6246:2017 specifies a method for determining the existent gum content of aviation fuels and the gum content of motor gasoline or other volatile distillates. It includes the determination of products containing ethanol (up to a volume fraction of 85 %) and ether-type oxygenates and deposit control additives.
For determination of gum content in automotive ethanol (E85) fuel, no precision data is available (see 14.1).
For non-aviation fuels, a procedure for the determination of the heptane-insoluble portion of the residue is also described.