The result of your conversion between grain/quart [US] and milligram/microliter appears here
To convert between Grain/quart [US] and Milligram/microliter you have to do the following:
First divide ((0.45359237/16)*(192/175)/480)/(0.0037854118/4) / 0.000001/1.0E-9 = 0.00006847
Then multiply the amount of Grain/quart [US] you want to convert to Milligram/microliter, use the chart below to guide you.
Symbol:
No description
Symbol:
No description