post alternative techniques

[andreios]

I buy most of my chemistry at Disactis, a french dealer: sodium chloropalladite,
gold chloride, different oxalates and pyrogallol, among other things. However, they
do not have potassium chloroplatinite. In fact, I don't know any European
dealer that supplies platinum, and I'd like to.

Companies like Sigma Aldrich will sell you practically anything - they do have platinum salts also.. But I am not sure if they are selling to individuals.