标准摘要
[中文适用范围]： 本文件规定了一种测定水或废水（包括处理过的城市废水和工业废水）中所含物质和混合物对从花粉藻中萌发的紫萍第一叶生长的抑制作用的方法。 该测试也适用于纯化学品，特别是植保产品和农药。 [外文原描述]： ISO 20227:2017 specifies a method for the determination of the inhibition of the growth of the first fronds of Spirodela polyrhiza germinated from turions, by substances and mixtures contained in water or waste water, including treated municipal waste water and industrial effluents. The test is also applicable to pure chemicals and in particular, plant protection products and pesticides.
英文名称Water quality — Determination of the growth inhibition effects of waste waters, natural waters and chemicals on the duckweed Spirodela polyrhiza — Method using a stock culture independent microbiotest