How to weigh out small amounts

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oftentimes you'll find yourself weighing

out a small amount of material one or

two MiG's and in these cases there's a

very particular way to weigh out that

makes it a much more accurate

measurement so the first thing to do is

start with a way paper and you want to

crease it diagonally okay and just fold

a sharp crease right down the middle of

it this is what you're now going to put

on to the scale and you want to tear it

although it seems very trivial to be

putting the way paper on one common

mistake that people will often make is

using a large vessel either a flask or a

round bottom sitting on a cork ring and

tear that and then add a MIG to that in

this case we've gone with a single piece

of weigh paper and it weighs about 400

milligrams now if you contrast this with

something like a cork ring and a round

bottom flask that's gonna be much

heavier so we need to consider when

weighing something out how much of a

difference in that total absolute weight

are we actually going to make and it's

pretty clear that percentage-wise one

milligram or two milligrams will make a

much bigger percentage difference on a

piece of weigh paper than they would in

a round bottom flask the easiest way to

transfer that one or two milligrams of

solid into your tube is to now utilize

that crease that we folded initially

and essentially pour your solid into the

tube this way you transfer all of the

powder into your tube so in the end when

weighing out very small amounts of

material you want to avoid heavy large

flasks or Cork rings and you want to go

with a light way paper this will give

you a much more accurate reading