Just received mine today. Do you guys make a 'batch' or just mix it once a week? 10mg is still 5mg inaccurate on a 0.001mg scale.
I measure 100 mg on the weight, mix with distilled water and then divide into five.
There are 20 mg left with a little distilled water - ten I have on the front and ten crowns
But I do not know how safe it is.