Well English is not my first language so I try to be as precise as I can.
And I don't realise I described anything?
Regarding formulas in different flavours.
You don't have to use them much in our chemistry.
The dirty chemistry of first reclaiming and then first refining are usually so mixed and dirty that balancing to estimate the amount of chemicals are moot.
The most important reaction as such is AR, and there we strive to use as little Nitric as possible.
For me as mainly hobbyist, I rarely have any brown fumes at all, let alone excess Nitric when done.
For a professional this would not be effective enough.
But the jargon, different formulas and such usually sneak up in you and suddenly they are there
And remember some of our esteemed members have little spare time and many do not speak primary English, some even rely on translators.
So try to be patient with us and study the forum. We try our best.
Regards Per-Ove