请问ISO1级2级3级4级--ISO9级与100级万级10万级洁净度的对应关系怎样?怎样换算？8.3级是多少万级？
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洁净度等级在100级以下者（1000，10000级等）通常用0．5μm粒径考核的居多。 扩展资料： ISO洁净空间单位体积空气中，以大于或等于被考虑粒径的粒子最大浓度限值进行划分的等级标准。用空态和静态方法进行测试。
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