I had my doubts about meths. I'm using Maplin's Universal Head Cleaner at the moment but I'm not too sure about its efficiency. Isopropyl Alcohol is my preference, which I used to have a steady supply of until I retired. So I guess I'll now have to buy some!
IPA. isopropyl Alcohol. Comes under many maufacturers labels and it used to be available from good chemists. I use it for all sorts of cleaning, optics, optical mirrors, audio and video heads and a proven tip for cleaning toner deposits from printer and fax drums (OPC, Organic Photo Conductors, selenium and CDS Cadmium DiSulphide) is a drop of spit and some of the same toner, applied very lightly, in a circular motion. Also be very careful when cleaning the mirros in copiers etc as they are FRONT silvered. This means that the are opposite to your mirror in the bathroom etc. They are FRONT sivered so that light is not distorted by having to pass through a layer of glass first. If in doubt contact the professionals.
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