(Part 2) Tests for PbF / SnPb solder
followup
Looks as though the orange colouration is due to tin/stannic iodide, from
the Sn in SnPb and PbF. After a week or so the orange colouration appeared
in the solution in the PbF test tube also.
Even more convincing collection of scintillating gold flecks in the SnPb
test tubes
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