goto an auto parts store and buy gas line antifreeze, its called "heet" and comes in a yellow bottle. make sure it doesnt list any ingredients other than methyl acohol. thats methanol
i just draw the methanol up through and then suirt it back out a bunch of times, so it goes both directions through the filter. i change the methanol now and then so its clear and i can tell the filter is clean, then i wrap in tin foil and bake at 250 for 30min.
btw you shouldnt need more than 2 filters tops to do 40-50ml, either you should prefilter or let the fina settle longer, cause theres obviously too much junk in what your trying to filter,