Posted by Malc on 25/05/2016 19:42:38:
However having looked at the box again it does say "Borax substitute" so I will have to give it a try.
.
Out of curiosity, I looked for 'Borax Substitute' … and found this
http://www.health-science-spirit.com/borax.htm
I offer it without 'opinion', except to mention that I think Sodium Percarbonate is unlikely to be an effective flux.
MichaelG.
Edited By Michael Gilligan on 25/05/2016 22:39:10
Edited By Michael Gilligan on 25/05/2016 23:07:44