Scrofula
Bluelight Crew
That seems a bit pointless... He obviously has accurate scales to know the contents weigh 417mg so he just needs to weigh out 139mg of the powder to give him exactly 100mg of pregabalin.
What's the point in messing on with eyeballing piles of powder and moving bits around with razor blades when he obviously has a set of mg scales?
He has a precise scale, not an accurate one. It can still be precisely, horribly wrong.
Kids, none of you has a "milligram scale". Sure, you can buy something that says milligram, but you need to read the specs. And then multiply by at least two. It may say "repeatability 10mg" or similar, but that's the best out there for home use, tested in a permanently dark lunar crater.
The accuracy is not linear, it's a whole lot worse at the lower end. You can have confidence that "4.173 grams" is between 4.150 and 4.190, but "173mg" could be 100-200mg, maybe. Read the specs and it'll be worse.
Real ones cost thousands and when used without a "freeze reading" are obviously still unable to measure a milligram difference. About 17mg is where I put the limit of reliability on a $4000 balance (again, below 150mg. much better higher up). Hygroscopic powders will absorb 50mg of water from your breath looming over them.
Anyone who sells you something and claims that precision, when not required by a government to be at least that precise, is inaccurate at best.
The accuracy is not linear, it's a whole lot worse at the lower end. You can have confidence that "4.173 grams" is between 4.150 and 4.190, but "173mg" could be 100-200mg, maybe. Read the specs and it'll be worse.
Real ones cost thousands and when used without a "freeze reading" are obviously still unable to measure a milligram difference. About 17mg is where I put the limit of reliability on a $4000 balance (again, below 150mg. much better higher up). Hygroscopic powders will absorb 50mg of water from your breath looming over them.
Anyone who sells you something and claims that precision, when not required by a government to be at least that precise, is inaccurate at best.