[Nursie]

I've only done homebrew and never used isinglass....

But when I used gelatin it set the yeast sediment into a jelly-like layer at the bottom of the fermentation vessel, so when I bottled I'm not sure there was really any in the finished product. The same may apply here.

I think the point of all of them is to encourage sedimentation, and thus they shouldn't be significantly present in the finished product

[talldan]

That's a good point. It's called the 'trub' that's left at the bottom of the fermenter. So trace amounts are still present, I'd imagine.