Measuring Lyophilized Powder to Divide among vials

Having a bit of trouble finding what I need with Google or I’m using inaccurate search terms.

Ordered 100mg of a powder in a large vial and I need to divide it into other smaller vials, still dry. If I reconstitute and place in other vials wet it won’t last long enough until used.

I do have a scale to measure, but I’m unsure how to go about this properly.

Thoughts or direction to where I can find how to do this?

Thanks

I would suggest using a jeweler’s scale, much more precise at the mg size. A regular kitchen scale would not cut it as the min resolution is 0.1g or 100mg, you could miss it by far.
Just search for 50g/0.001g Digital Jewelry Scale at your fav online store. It can set you back about 20 bucks and you’ll be able to measure by the mg. Happy dosing!