? about preservatives

[clockwork]

I was told to treat my blades with selenium dioxid 70% and NA- thioanthimowat 30%. not sure if the last is spelled right. Would any agree on the use of the agents on there blades

[Jeff Pringle]

Was the person telling you this your friend, or your enemy?
Did they describe the effect the chemicals would have, or the reason they were selected? :confused:
Selenium dioxide is an oxidizing acid, that should have the effect of turning the steel black. The other chemical may be something like ammonium thiosulfate, a photographic fixing chemical.
I think you'd be better off with mineral oil or microcrystalline wax for preserving.

[Rich]

Definitely stick with mineral oil or Renaisance Wax (microcrystalline wax).
The other mentioned will turn your blades various colors.

Rich