The result of your conversion between milligram/liter and grain/quart [UK] appears here
To convert between Milligram/liter and Grain/quart [UK] you have to do the following:
First divide 0.000001/0.001 / ((0.45359237/16)*(192/175)/480)/(0.00454609/4) = 0.01753922
Then multiply the amount of Milligram/liter you want to convert to Grain/quart [UK], use the chart below to guide you.
Symbol: mg/l
No description
Symbol: gr/qt
No description