On 06/13/2010 06:37 PM, Ken Brown wrote:
> Hi all,
>
> I have a bunch of old tubes which have not been stored properly. I want
> to clean them up before checking filaments and then offering them for
> sale or trade to hams.
>
I have always used near pure isopropyl alcohol, which I obtained from an
electronics supply house, and Kleenex. You need to be real careful
wiping to avoid removing the lettering but the pure alcohol evaporates
quickly and leaves no residue at all. Window cleaner is a rather harsh
chemical. As for the aluminum on 813's, I would use the alcohol to
remove grime and leave them alone otherwise.
Mike, W1NR
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|