This is a damn good thread....but I have seen one error over and over again in this thread and in many others.
There is a HUGE MISCONCEPTION about the use and result of a Whatman filter. For some reason, a lot of people think that if you run dirty oil, bb,ba, or the final product through a whatman filter then they will have sterile gear! THIS IS BULLSHIT! The filter is a sterile piece of equipment!!! It is NOT used to sterilize anything!!!! It IS used to filter out particles that might be in the product! This is getting old as hell.