A chemist gave me enough potassium chromate to have a go. Ground off a few mg from some sheet lead , dropped into some chromate solution and a cloudy yellowish deposit formed in the otherwise orange liquid - what it is supposed to do apparently. Then ground off some known lead free solder , added to some of the solution and no yellow. Then ground off some known SnPb solder and again no yellow - so not so simple a test as first appeared, Pb and tin are combined too well to react ?
- posted
14 years ago