Blue Lab or nothing dude. Don't cheap out. Oakton, HM Digital, Blue Lab. No chinese knock offs, none of Hanna or Milwaukee's bullshit hyped up products. NOTHING BUT THE BEST TO HARVEST THE BEST.
BLUE LAB TRUNCHEON ACCURACY: ±0.1pH, ±0.1EC, ±1F:
wait.... wait. tenth .1, hundredth .01, thousandth .001, millionth, .0001, so I guess that means the ebay rip off is the same as the Blue Lab in accuracy (parts per million)? I think?
I don't know, chinese rip offs are never ever as good as the real deal.