Hydrochloric acid.
Hello Wolfgang,
Plain Corega tablets are safer to use. Anything they can’t remove can also be removed much more safely with Bleichfix.
What’s more, this keeps the trays stable in the long term. If I were to pour hydrochloric acid into my CrMo trays (I deliberately don’t write ‘stainless steel’, as that would simply be misunderstood; the stuff isn’t actually that ‘noble’—my trays are made of a high-alloy, corrosion-resistant steel), I’d be watching pitting corrosion take hold. So I avoid doing that at all costs.
If I were to pour hydrochloric acid into my plastic bowls (I have those too, and keep them for heavy-metal toning), I’d be delighted with the visual purity. Unfortunately, the dirt remains inside and is thus reactivated as a redox agent. So it’s counterproductive.
So, ‘dirt that you can see’ is turned into ‘cleanliness that is harmful’. If you’d be so kind as to forgive me for the simplistic answer regarding the chemistry at play here.
I’d be happy to explain the exact chemistry as well. But not now. Right now, I just want to protect others from using this crazy tip!
The idea of a clean, polished bottom or the Swabian ‘Kehrwoche’ is by no means helpful in every situation.
The solution is simple: after each use, wipe out the trays and leave them to dry. Every now and then, pop in a denture cleaner tablet and leave it to work overnight. For stubborn cases, two hours of warm Bleach Fix and you’re sorted.
This solution is safe, free from major risks to the user [sentence continues...]
(Dried-on residues from a hexacyanoferrate Bleach bath come off particularly well with hydrochloric acid; the user can then enjoy a few minutes of a Christmassy bitter almond scent. Before dying of classic hydrocyanic acid poisoning! In another case, he may enjoy Nazi-brown fumes rising from the bowl before he then dies a miserable death from pulmonary oedema within three to five days! In both cases, no doctor can help.
Dying with honour next to the bowl is the order of the day. I’d be happy to make a donation for the gravestone inscription, but I’d like it to read as follows: “Here lies a dead man. He was too stupid to understand chemistry. It was only about nine elements. Death was self-inflicted; perhaps a nomination for the Darwin Award will follow.")
[Sentence continues now; please read the above insert three times and perhaps you’ll understand!]
and consists exclusively of valid substances certified by the manufacturer.
Best regards,
Franz (a chemist by profession)
