That generally sounds good to me, though I personally wouldn't put hydrofluoric acid close to hydraulics. However Gadge has way more experience in that field than I have.
Yes, grumpy is all too correct here, speaking with my 'career labrat and qualified Industrial Chemist' hat on.
Hydrofluoric Acid [HF] is
extremely nasty stuff, from the human health perspective. In
any concentration. Anyone for non-healing skin wounds; and that is just the lowest level long-term effect, which can and has led to amputations of fingers?
Point one; I wouldn't, and have refused to do so in chemical laboratory situations, use HF for any purpose, unless there is
absolutely no alternative.
Even then, it is
essential to have Calcium Gluconate cream on hand, and know how to apply it. And the appropriate medical literature, to inform the hospital Casualty Dept staff about treatment, when a HF skin contact case has to go there.
An example local to me, is that of removing silica [SiO2] deposits from power station steam turbine blades. Worksafe Vic are all over them like a rash, during preparation, and while it happens!
Point two; unless you have a source via an industrial supplier, or some 'old stock' product, you'll find that the 'mag wheel cleaners' of old, which did contain HF, have been removed from the market. As have the 'stainless steel cleaner' brews used by restaurants in the past. Rightly so, IMHO.
