ISO 28706-4:2016描述了一种在25°C和95°C之间的温度下测定釉质和搪瓷制品耐碱性液体侵蚀性的试验方法。使用的仪器是一个圆柱形容器，其中仅测试一个搪瓷试样。 注1:本试验方法最初用于测定釉瓷和搪瓷对热氢氧化钠溶液的耐受性。在ISO 28706本部分的范围内，可以测试其他碱性液体的电阻。 注2:ISO 28706的本部分使用圆柱形容器，通常用于对化学工业用玻璃和搪瓷涂层进行试验。

ISO 28706-4:2016 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 cylindrical vessel in which only one enamelled specimen is tested. NOTE 1 The test method was initially set up for determination of the resistance of vitreous and porcelain enamels to a hot sodium hydroxide solution. Within the scope of this part of ISO 28706, the resistance of other alkaline liquids can be tested. NOTE 2 This part of ISO 28706, which uses a cylindrical vessel, is generally used for tests carried out on vitreous and porcelain enamel coatings for the chemical industry.