Quote Originally Posted by StoneNYC View Post
What did you use to measure mg?
I can't answer for the OP, but the usual approach is to make a dilution. Dissolve 10g (or whatever you can measure quite accurately) into 500mL then top it up to 1L, that gives you 10mg/mL. Mix it well, dilute it another 10x to get 1mg/mL and then measure 1.4mL into your developer with a syringe or pipette.