Agree with our Neighbor--that is a TON of NC, and getting it all into the mixture using a 10% NC lacquer solution must take miserably long for the acetone solvent to "finally" dry out enough to work the mixture...I would go nuts waiting and stirring and waiting and stirring. It would use a lot of acetone, too. Hell, getting the NC up to 5% in my Dragon Eggs is a chore, but double that quantity???
I, too, cannot comprehend why that much NC is needed. Does it constitute an essential component of the slow/smouldering phase in strobing??? Weird.
Please detail your manufacture process that allows you to get that much NC into your formula without using dried NC powder.