On 03/21/2013 08:16 PM, Smiffy wrote: > One other note on persulphates - ammonium persulphate is very hygroscopic. > I had a 2.5kg tub, which I found to be useless when I went to it the other > week. Whilst the tub itself was polypropylene, the lid was made of some > other plastic that had decided to crack in the Australian heat and let in > the moisture. The result - a nasty slush that couldn't etch anything. I > believe that the sodium/potassium salts don't have this problem, so would > tend to favour them in future. I tend to just let my sodium persulfate solution dry and crystallize when I am not using it, you just re-add water and dissolve the crystals by stirring and you can use it again.
-- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
