The result of your conversion between nanogram/cubic meter and grain/ounce [US] appears here
To convert between Nanogram/cubic Meter and Grain/ounce [US] you have to do the following:
First divide 1.0E-12/1 / ((0.45359237/16)*(192/175)/480)/(0.0037854118/128) = 0.
Then multiply the amount of Nanogram/cubic Meter you want to convert to Grain/ounce [US], use the chart below to guide you.
Symbol:
No description
Symbol:
No description