Quote Originally Posted by paul_c5x4 View Post
formalin is just as difficult to obtain - Try asking for it in any high street chemist here in the UK...
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So many things are difficult to obtain in the High Street these days, but eBay has come to the rescue a bit.
I got some Formalin (for a different purpose) a few months ago from a UK eBay seller called APC-Pure, who have all sorts of other chemicals available, including a few useful in photography.

As an aside, Borax has become stupidly hard to get hold of, but if you have a Chinese Supermarket nearby they generally have it (I think there used to be one in Ber St)