are people really that sensitive to such precise mixing? I just use a 50ml scaled measuring tube, a 200ml bottle to dispense into which lets me guesstimate the pg/vg ratio. Takes me 5 minutes to mix 200ml. I aim for a 4mg mix, and I would imagine i have a margine of error of +/- 1 mg at most. I aim for a 70/30 ish mix, i may have a error of + 5%, - 15% if being really lazy, add about 1% of flash enhancer, which is about one short squirt ... but there is no way I would notice the difference with these error margines.