I have a question about storing a solution comprised of 1 part hydrofluoric acid (technical grade, 70 percent), 2 parts
nitric acid (40 degree Baume minimum), and 3 parts water.
I've seen guidelines saying anything hydrofluoric is stored in needs to be a polyethylene or lead, but I'm not sure once it has been mixed with water and nitric acid.
We have the raw ingredients, and want to create a small amount of this pickling recipe into a separate container as to not contaminate any of the sources. We can either keep it, or use it up in one use.
What material does that container need to be?