That's awesome, I already have scale like that. So if just need to worry about bottles then, right?+1 for measuring by weight, took me about two weeks to start doing it with everything. Initially I was just doing it with my Nicotine so I didn't have to clean any sort of syringe or anything but over time I've graduated to using a scale to measure everything, a quality scale which reads to ~300g in 0.01 increments is a very valuable tool for DIY liquid.