Next year's goals for PiMS include reagent management.
The relevant activities seem to be:
The features needed seem to be:
Can anyone improve this plan?
By recipe, I mean a reagent definition, e.g. "0.5M magnesium chloride", as contrasted with a particular bottle of it.
If you say that you have used 500uL of a reagent, then PiMS can subtract that from the current stock you have used. But such numbers must be treated as estimates, not as reliably known values, unless the level of discipline in the lab is unusually high.
A future extension of this work is to handle radionuclides. In this case "amount" means not only volume, but also bequerels, and the calculations must allow for half life.