Interesting reading. Apparently they sell the solution as well, but have put the ingredients online.
Sounds a bit involved, though I imagine with the cost of some peoples eye pieces/optics here it could be worth the effort.
iceman: you can get Isopropyl alcohol from most chemists. Make sure you ask for 90%+ stuff though (don't get anything like isocol from a supermarket as its full of other crap). It's handy stuff to have around, its also good for cleaning computer parts (ie. heatsinks, CPU cores etc).