ISO 28706-3:2017描述了一种测定玻璃和搪瓷制品在25°C和95°C之间的温度下耐碱性液体侵蚀性的试验方法。所使用的仪器是一个六角形容器，其中有六个搪瓷试样或一个四方玻璃瓶，其中同时测试了四个搪瓷试样。 注1:可测定对任何碱性液体的耐受性。然而，该试验方法最初用于测定洗涤纺织品所用的中性和碱性范围内的热洗涤剂溶液的耐受性。 注2:由于洗涤剂的成分不断发生变化，因此规定了一种标准试验溶液，就其碱度、润湿性和络合行为而言，该溶液可被视为市场上洗涤剂的典型成分。 标准试验溶液的pH值和碱度取决于三聚磷酸钠、碳酸钠和过硼酸钠的比例；三聚磷酸钠同时起络合剂的作用。通过添加烷基磺酸盐获得标准试验溶液的润湿性。由于氧对珐琅质的影响不重要，且过硼酸钠含量的增加不会导致标准试验溶液的碱度发生任何显著变化，因此不认为有必要增加过硼酸钠含量。使用本标准试液和其他试液（包括5%焦磷酸钠溶液）对不同瓷漆进行测试，证明使用本标准试液测定瓷漆对热洗涤剂溶液的耐受性是合理的。

ISO 28706-3:2017 describes a test method for the determination of the resistance of vitreous and porcelain enamelled articles to attack by alkaline liquids at temperatures between 25 °C and 95 °C. The apparatus used is a hexagonal vessel in which six enamelled specimens or a tetragonal glass bottle in which four enamelled specimens are simultaneously tested. NOTE 1 The resistance to any alkaline liquid can be determined. However, the test method was originally used for the determination of the resistance to hot detergent solutions, within the neutral and alkaline range, used for washing textiles. NOTE 2 Since detergents are continually subject to alterations in their composition, a standard test solution is specified which, in respect to its alkalinity, wetting properties and complexing behaviour, can be considered as a typical composition for the detergents present on the market. The pH value and alkalinity of the standard test solution depend on the proportions of sodium tripolyphosphate, sodium carbonate and sodium perborate present; sodium tripolyphosphate acts simultaneously as a complexing agent. The wetting properties of the standard test solution are obtained by the addition of alkylsulfonate. A higher sodium perborate content is not considered necessary since the effect of oxygen on enamel is unimportant and an increase in the perborate content does not cause any significant alteration in the alkalinity of the standard test solution. The testing of different enamels using this standard test solution and other test solutions (including 5 % sodium pyrophosphate solution) has justified the use of this standard test solution for determining the resistance of enamels to hot detergent solutions.