Quote:
Originally Posted by irv
I agree, John, but like I wrote above, if there is no discernible way to detect if it was bleach, peroxide or water, how does a TPG not grade those cards?
I am unsure if the technology exists or not but if the TPG's don't have the technololgy that can detect bleach or peroxide, and the smell test doesn't work, then how can they not grade those cards? 
I have never sent a card in for grading nor have I ever soaked a card but I couldn't imagine having my cards sent back as ungradable because someone guessed that I had soaked them in bleach or peroxide.
Edit: Just read Peter's thread here on the SGC Joe Jackson card. Do detectable means exist for detecting bleach or peroxide and if so, is it safe to say they weren't utilized when this card was graded? https://www.blowoutforums.com/showpo...postcount=3297 |
That gets to be a complex subject. Most light colored cardstock that's wood based was bleached when it was made.
None of the traditional methods to detect bleach that I've heard of would be acceptable.
It *may* be possible to check with a spectrograph, but I haven't read of anyone doing it.
Bleaching is done sometimes in some actual conservation.
https://www.conservation-wiki.com/wiki/Bleaching_(PCC)
See the section on appropriateness, and section 2.6 on testing.
Note, none of that applies to some guy with a tray full of stuff from the grocery store....