<div dir="auto">Ferric chloride is nasty, and becoming increasingly difficult to get.<div dir="auto"><br></div><div dir="auto">Try hydrogen peroxide and hydrochloric acid (or hydrogen peroxide and vinegar). Instructions on the web. I have tried it and it works.</div><div dir="auto"><br></div><div dir="auto">Andrew</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 7 Dec 2020, 08:56 Marshland Engineering, <<a href="mailto:marshland@marshland.co.nz">marshland@marshland.co.nz</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Is this Ferric Chloride still available in NZ ? <br>
<br>
I have some ammonium persulfate but FC works at room temperature which makes<br>
it easier. <br>
<br>
Cheers Wallace<br>
<br>
<br>
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