ISO 6887-4:2017规定了ISO 6887其他部分未涵盖的特定食品微生物检验样品和稀释液的制备规则，该标准涉及更一般的类别。本文件涵盖各种各样的产品，但不包括出版后投放市场的新产品。 ISO 6887-1规定了微生物检验用初始悬浮液和稀释液的制备一般规则。 当相关国际标准中规定了制备细节时，ISO 6887-4:2017不包括计数和检测试验方法的样品制备。 ISO 6887-4:2017适用于以下产品: -酸性（低pH值）产品； -坚硬干燥的产品； -脱水、冷冻干燥和其他低aw产品（包括具有抑制特性的产品）； -面粉、全谷物、谷物副产品； -动物饲料、牛蛋糕、牛粪和宠物咀嚼物； -明胶（粉状和叶状）； -添加水分的人造黄油、奶油酱和非乳制品； -鸡蛋和蛋制品； -烘焙食品、糕点和蛋糕； -新鲜水果和蔬菜； -发酵产品和其他含有活微生物的产品； -酒精和非酒精饮料； -替代蛋白质产品。

ISO 6887-4:2017 specifies rules for the preparation of samples and dilutions for the microbiological examination of specific food products not covered in other parts of ISO 6887, which deal with more general categories. This document covers a wide range of miscellaneous products, but does not include new products brought on to the market after publication. ISO 6887？1 defines the general rules for the preparation of the initial suspension and dilutions for microbiological examination. ISO 6887-4:2017 excludes preparation of samples for both enumeration and detection test methods when preparation details are specified in the relevant International Standards. ISO 6887-4:2017 is applicable to the following products: - acidic (low pH) products; - hard and dry products; - dehydrated, freeze-dried and other low aw products (including those with inhibitory properties); - flours, whole cereal grains, cereal by-products; - animal feed, cattle cake, kibbles and pet chews; - gelatine (powdered and leaf); - margarines, spreads and non-dairy products with added water; - eggs and egg products; - bakery goods, pastries and cakes; - fresh fruit and vegetables; - fermented products and other products containing viable microorganisms; - alcoholic and non-alcoholic beverages; - alternative protein products.