dgeesaman
Gold $$ Contributor
I echo what the others have said: having a sub-milligram scale allows reliable resolution of a granule of powder. It mostly removes the scale measurement uncertainty from the system.So the question :
How does a $1000 + electronic setup, that can detect 1/100th of a grain, dispense a powder charge more accurately and more consistently to less than the weight of one granule of powder , if it only dispenses whole granules ?
It’s up to you how to handle the fact that granules are both larger than the scale resolution and variable in weight. If you want to be very picky you can throw the charge .04 below target weight and manually add granules of appropriate size with tweezers to get very close to the perfect weight. Or you can manually trickle in the final fraction and get weight within an average kernel or two. Or you can accept +\- .03gr and move on to the next charge. But measuring error is not limiting you.