I use 3 - 20 - and 35 mil syringes with sharp tips. I'd use blunt tips, but local farm supply stores don't carry them.
Mixing by weight may be easier to some, but for myself, I don't mind doing it old school.
If you choose to keep using syringes, they can be had in local farm stores and online by the box with vet supply and amazon.
I also buy my PG/VG in gallon bulk. Glycubes from essentials depot are popular. Save a lot of money there, vs buying liters or small amounts.
I'll bookmark that website for future reference. I read a tip that you can wrap packaging tape around the syringe and reuse it without worry of the markings rubbing off.
I'm about to have me some blueberry doughnut sauce, thanks to your recipe, heck to the yeah! I may have to just shake and vape it because I won't be able to wait.
The only thing... They don't carry acai, so I may up the blueblerry by 1%.