>You'd need a 0.45 micron _absolute_ sterile membrane to filter out ML. A
>0.5 micron nominal pad won't do it. Same goes if you are trying to remove
>yeast from a sweet wine.
>
>Tom S
>
This whole business of filtering out bacteria just doesn't make any sense to
me. As a person who has to rely on sterile technique, I can say that there's
no half way point with sterility. Things are either sterile or they're growing
bugs, though possibly not in as high numbers. When you use a filter, there's
lots of leakage and dripping, so even if the filter was 0.45 microns, there
would still be contamination.

Add to that the fact that there has GOT to be a variation in the pore size.
Even if the average size is 0.45, then there have to be some pores that are
much larger.

I think filters do a great job in clarifying wine, but I've never had any luck
filtering out organisms.

Lee