Welch's is a concentrated juice so it is not
likely to have any contamination in it.
However I would suggest to use the campdens
The reason that a lot of recipes do not list campden
tablets is because using campden is a matter of
proper winemaking techniques and considered
as an obvious step.
I used sodium metabisulfite powder, I think it's the same thing but easier to use, maybe one of the other members have more to say about this, the ingredients, as far as I understand in a campden tablet are the same as a sulfite powder. Sorry about the cork in the bottle, I live in Alaska, I may never have wine that'll make it to a bottle with a cork, I may drink it first. HeeHee, Troy