hi there, i'm new to this and someone mentioned that sulfuric acid is substitutable with phosphoric acid. now i have some questions: which concentration is needed? what i found is acid with 37 % (but i think this is only working for dentists) and concentrations from 75 to 85 %. is this okay for use and is the procedure exactly the same like shown in the video? furthermore i had the same problems with the other ingredients: glacial acetic acid, IPA and acetone, what concentration is needed? my guess would have been, the purer, the better but since i'm absolutely new to this, i thought asking for it is no mistake. and finally, the mercury nitrate, it is really hard to get. i couldn't even find oldschool thermometers, at least where i come from. does anyone know suppliers in europe?
thanks in advance