[MPWR]

I suppose you could filter it, but I don't bother. It all sits in a sealable tub, and I do have a cm or so of sediment now.

95% should do the trick fine. 99% is availible in some grocery stores and drugists in the states, but anything above 90% will work. You can also try looking for it in hardware stores- they often have it for use as a paint solvent or fuel for alcohol stoves.