T5555 wrote...
Where did you get them from?
There's been a development, so I'll wait to see how it pans out before deciding whether or not to name them! They were packed in hardboard (MDF, whatever), which is a good idea to stop them getting creased, but a bad idea since hardboard is full of acids and other crap.
It's now looking like the tester may have just picked up on a thin surface residue which appears to have mostly gone away: I'll give it another try tomorrow to see how they're looking, but it's no longer showing quite as much acid. I guess there's probably not enough to damage artwork, especially if they're unpacked and allowed to air, but I shouldn't jump to conclusions again since I may have already done just that. I suppose it ultimately depends how much they've absorbed.
Perhaps not the best medium to pack them with, though. And it stinks.