这份文件给出了化妆品微生物子考试，使他们有适当的风险分析，质量和安全的共识[z的执行一般准则。 B.Wasseraktivität低（低AW值），水醇组分，极端的pH值]得到保证。 因为大量的各种化妆品产品和此范围内的潜在可能的应用中的，这些指令用于潜在合适的（例如，由于某些水不混溶的产品）有一些产品中的每一个细节

ISO 21148:2017 gives general instructions for carrying out microbiological examinations of cosmetic products, in order to ensure their quality and safety, in accordance with an appropriate risk analysis (e.g. low water activity, hydro-alcoholic, extreme pH values). Because of the large variety of products and potential uses within this field of application, these instructions might not be appropriate for some products in every detail (e.g. certain water-immiscible products).