Architectural printers making blueprints used to have an ammonia
The new printers don’t use ammonia anymore.
I used to get the spent ammonia from some of these printers. You
could not open the bottle in a small room without a strong ammonia
smell practically knocking you out.
Worked with a guy who took a small whiff of the bottle and passed
It does work, but use a little at a time. It’s very concentrated if
it’s similar to the stuff I used.
The ammonia we buy at the store is mostly water. I don’t know the
ratio, but that’s why it is fairly cheap.
Most patinas should be put on with good ventilation. There are many
types for various metals.
The old cyanide patinas were dangerous. Most of these are long gone.
If you buy any read the MSD (Materials Safety Data) sheet.
If you make your own search on Orchid as see if there is more