原文由 flyson(flyson) 发表:
最近做这方面实验，有困惑。FDA 177.1210的结果是mg/kg怎么算的？是氯仿可溶性物质除于取样量，或是氯仿可溶性物质除于样品的模拟液重量，亦还是氯仿可溶性物质除于加入氯仿的重量？

求大家帮帮忙吧

(c) The closure assembly to include the sealing gasket or sealing compound, together with any polymeric or resinous coating, film, foil, naturalcork, or glass that forms a part of the food-contact surface of the assembly, when extracted on a suitable glass container with a solvent or solvents characterizing the type of foods, and under conditions of time and temperature characterizing the conditions of its use as determined from tables 3 and 4 shall yield net chloroform-soluble extractives (corrected for zinc as zinc oleate) not to exceed the tolerances specified in table 2, calculated on the basis of the water capacity of the container on which the closure is to be used.

都不是，应该是氯仿可溶性物质除以垫圈所配套容器水容量的重量（如容器可装500ml水，那就除以500g）