In that situation, I think it unlikely that any commercial filter would be effective in clearing the fine sediment of older wines that I mentioned. Coffee filters are impractible for large volumes. I guess education of tasting group attendees is the only solution
I agree, in the sense that I wish people were more aware of what care is needed to make an older red wine show its best. (I think lots of “off” bottles are more due to mishandling than any real defect in the wine. 1983 red burgs are a good example.)
I’ve never found filtering device that really did a great job on totally removing the sediment from the aging out of a red wine. I use a coffee filter (paper) to get rid of the sediment that is left after decanting the rest off, after standing it up for sufficient time. Even then, lots of sediment is finer than the coffee filter can trap. I then mix it into the wine, much as a winemaker blends in press wine.
Unless I have no choice, I try to essentially rack the clearer wine from the sediment, not run it all through any kind of filter. Even a coffee filter is mild by comparison to what the winemakers use to “filter” wines, so I have no problem using it , as I prefer not to lose/leave a significant amount of wine just because it has sediment in it, after decanting.
But, I’d love to find a better solution for filtering out sediment than a paper coffee filter. I sure haven’t found one, and I’ve been looking for many years.