Hi I am looking to meaure 5 mg of amt to use as an ADHD drug. I have got scaes that measure as low as 1mg but they son't seem to measure this low i.e when I put little bit on, nothing happens and other times it shoots up to 20mg. I believe you need scales as sensitive as 0.0001g, which are really expensive, but I might have to resort to buying these. There is liquid measurement. I could measure 20 mg of amt. Am I right in saying if I put this in 20 ml of water then 5 ml would = 5mg of amt? Also how do I dissolve it in water or another liquid and preserve it for 4 days or longer in that liquid? Could someone tell me the things I would need, I am new to this thanks.
