如何配制300ppm2,4-D
问题描述：
如何配制300ppm2,4-D
请问 1 克2,4-D 如何配制成300ppm2,4-D?
答
1PPM=1mg/L
300ppm=300mg/L
称取0.3g2,4-D定容到1L即配置好了300PPM的2,4-D