OK, I know I am a bit late with contributing to this thread but I use about 1/4 tech grade IPA (Ebay), 3/4 distilled water (Halfords) and Ilfoto wetting agent (Jessops). Various recipes on internet. This is for vinyl not shellac. Blow off as much dust as possible. Lay record on a microfibre cloth. Dribble brew on record and gentle follow the grooves with a microfibre pad (any poundshop) first in one direction then the other- let brew do the work not the pads. Then - look away now if you are of a nervous disposition- wrap a nice soft microfibre cloth (with a loose weave) around the T-shaped nozzle of a Dyson and gently hoover up the liquid (it seems to evaporate very quickly - the Dyson is still working). Flip over and do the other side and put in a nice cleaner inner. It sounds harsh but I have salvaged some very dirty records (with mold on) this way. I have also tried it on pristine records - with no noticible damage. It will not unfortunately take out scratches or damage done by bad needles. If in doubt try it out on an old Barry Manilow record first.