That one bottle was several years ago and I didn't keep it, so I have no way of checking the label. I know I had problems with that one bottle and it is possible it was contaminated from something else but I have never had a problem with the 99%, which is pennies more.
I actually used to work for Costco and besides the name and concept, there is very little in common between the two countries: while the management is similar and all report back to Issaquah, Washington, there is very little business between the US and Canadian companies. Part of this is labeling requirements (they have to be in French and English in Canada) and part of this is what is allowed in food - Canadians are much more strict about dairy/meat, less strict with fruit and grains. It is just easier to buy from Canadian distributors than to import from US distributors and re-label everything.