"Eiron" wrote in message
...
jasee wrote:

Perhaps if you did it with a touch of detergent and distilled (not
dionised) watee then thoughly rinsed them you'd clean them quite
effectively?

What's the difference between distilled and de-ionized water?
I thought both methods just left H2O. Anyway, it's the rinse
water that should be pure, not necessarily the cleaning solution.

Distilled water doesn't contain anything else but H20 so is a better solvent
and shouldn't leave any residues at all. It's theoretically possible that
there could be non ionic impurities in deionised water: I always use
distilled for cleaning camera lenses for example..