Originally Posted by WLC
When you get microgram quantities of pesticides in each gram of wax (about a mL), then you can appreciate why even wax coated plastic can be problematic. That 8ppm number for coumaphos is big.
A microgram is 1 millionth the size of a gram. A milligram is 1 thousandth the size of a gram. Rounding 8 micrograms to a milligram seems like a stretch to me