ISO 9022-12:2015规定了与光学仪器（包括其他领域的附加组件（如机械、化学和电子设备））在同等条件下的环境试验有关的方法，以确定其抗污染能力，即与腐蚀性化学物质（以下称为试验剂）的接触。 然而，只有在特殊情况下，才能按照ISO 9022-12:2015的规定对完整的仪器或组件进行测试。通常情况下，代表性样品（如材料项目或代表性基材上的表面涂层）用于测试。 ISO 9022-12:2015中所述的测试旨在为在使用寿命期间可能受到污染的仪器选择材料和组件，而非常规生产控制。 测试的目的是调查仪器，尤其是仪器表面、涂层或合成材料对短时间暴露于测试试剂的耐受性。

ISO 9022-12:2015 specifies the methods relating to the environmental tests of optical instruments including additional assemblies from other fields (e.g. mechanical, chemical, and electronic devices), under equivalent conditions, for their ability to resist the influence of contamination, i.e. contact with corrosive chemical substances (hereafter called test agents). However, complete instruments or assemblies are only tested as specified in ISO 9022-12:2015 in exceptional cases. Normally, representative samples such as material items or surface coatings on representative substrates are used for testing. The tests described in ISO 9022-12:2015 are designed for the selection of materials and components for instruments likely to suffer contamination during service life, rather than for regular production control. The purpose of testing is to investigate the resistance of an instrument and, in particular, of instrument surfaces, coatings, or synthetic materials, to a short exposure to the test agents.