Really - it makes a difference??? How can this be? I mean, it all gets mixed together when you shake it up. Seriously I want to know if it makes a difference and how. Might need to change the way I mix.
This is how I do it: I have my base, including nic already to go whenever I mix, so all I need to do is squirt 10 mls of base into bottle and add drops of flavoring, unless the recipe calls for over over a ml or two of flavoring.
If so, I mix in a 10 ml syringe and when there is a lot of flavoring, first I squirt some PG into top of syringe (using my thumb to cover the bottom of syringe), then 2 mls of VG based nic, then flavoring, and top off with PG. Then I pick up my empty bottle, hold it under syringe and carefully slide thumb off syringe opening so liquid from syringe drips into bottle. I blow into top of syringe until liquid fills bottle. Then to make sure I get anything that is stuck to the sides of the syringe, I use the plunger to get the rest out. If flavoring is less than a mill, I just squirt my prepared base into empty bottle and then add drops of flavoring to the bottle directly from dropper bottle or separate pipette.
I like a 10 - 12 mg nic strength. My base is around 12 mg nic strength, so that allows for a little wiggle room for the flavoring. I like somewhere between 70/30 and 80/20 PG/VG mix, so I use 1 part of 48 or 50 mg VG nic to 3 parts of PG for my base. That means my base is 75/25 PG/VG. Using 48 mg of VG nic yields a 12 mg nic base, 50 mg - a tad more.