It makes me wonder about other impurities. If platinum can have one effect, maybe another can have the opposite. Was this especially pure gallium? 99.99% is pu

It makes me wonder about other impurities. If platinum can have one effect, maybe another can have the opposite. Was this especially pure gallium? 99.99% is purer than you normally expect when you buy an ingot from the metal supplier, although the usual impurities are considered mostly harmless. (I.e. aluminum won't have any gallium.) Unfortunately Sci-hub didn't have the paper, when I checked.