Standard turkey baster syringe at grocery store/dollar store is marked for 30+mls. (Comes handy when I haven't mixed up a vg&pg base and I'm in a rush)
I mix a couple dif ways depending on how busy I am.
This year I decided to make my own "1 shot/single mix". So I bought my 6 recipe flavors in larger volume,,, mixed it up in 500 ml stainless steel water bottle,,, (yes I hit this with the immersion blender) I just shake the bottle and pull out 12mls and put it in my 120ml reg bottle with premixed vg&pg ,,,(nic is then added or not depending if the in-laws are in town
If I'm starting from the very beginning without any premix of recipe or vg+pg... I pour 250ml of vg in my marked cup,,add the recipe then top off the cup to 500 mls with pg ,,,then I hit it with the immersion blender for about a minute (white foam tells me the flavor molecule are broken down) this is all poured into another 500 ml bottle of finished juice
,,this is the part everyone misses,, I do not ever put nic in my mixing,,it never gets beat up or blended until I my final point of use,,,most of the time I am zero nic.
So,, I have on hand most of the time 3stainless steel water bottles of:
1 -500ml bottle for completed ejuice
1-500 ml bottle of vg+pg only
1-500 ml bottle of flavor blend/single shot
1-30ml glass bottle of nic as "in use"
When I go on vacation I do take all 3 just in case I cant get back home for some reason,. I got caught in California once because of a hurricane at home.
This likely wouldn't work for those who use several recipes,,i pretty much vape the same flavor everyday for almost 3years now,,,, sampling dif vape juices on vacation since I don't really shop at all.
Anyway,, you will find what works for you over time,,just enjoy the journey