> Bill wrote: > Might just prove a little tricky here in rural > Tassie andrew but thanks for the tip. I'll > give it a try. No hydroponics stores in Tassie ? Do they just grow their smoking tomatos out in the open down there :P Don't worry - I wont make any Tasmanian jokes. Here in Brissy we normally are too busy making Ipswich jokes. You can get buy without H202 for the CuCl etchant. It just makes it a lot easier to start it up. >What strength was the hydroponics store stuff? It was that stuff they call "40%" which is some measure of volume gas or something. It's realy 27% or something similar from what other posters have said.
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Re: Ammonium Persulphate
2006-06-07 by Andrew