This is getting ridiculous and damned near superstitious, but since it's still cheaper than wasting more powder: what brands/sources are people using for their GSO, BB, and BA?
I've never had a problem in the past with now brand 100% pure food-grade GSO (not filtered but I don't care since I'm filtering the final product) or the BB/BA from medlabsupply, and the beakers are boro3.3...
Also, I've thought about trying EO, but I'm reluctant because I haven't used it before (apparently some people react badly to it, for others it's great) and as Cobalt has already pointed out, nobody else seems to need it...