How to convert EC (Emulsifiable concentrate) value of pesticide to ppm?

I have three different pesticides namely Chlorpyrifos (20% EC), Profenofos (50% EC), and Glyphosate (71% SG). But I cannot find out their ppm. Please help me find out ppm from EC and SG. Is there...

31 December 2021 5,070 6 View