I want to do it but it will have to wait just a bit since I will only have 1 of the 4 flavorings
I am looking at the Scubabatdan's Calc and wow. I will have to play around because he has tabs for PG base, VG base, No Nice but the problem is my base is 50/50. But that shouldn't be too hard to overcome. I can use it's calculations and another one I found called the simple calculator and figure it all out.
I have one question, do you add any water/vodka/PGA?
Also noticed that his 'make a new recipe' section there isn't ripe banana listed. Not a biggie.
If you start off with a 50/50 nic juice mix in Dans calculator and want to keep it at 50/50 then you would have to change the amount of VG% depending on what nic level you are aiming for. Look in section 2 of the calculator and adjust the VG% amount in section 1 so the amount of no nic PG is equal to the amount of VG in section 2.
Example:
Starting with 50mg nic @ 50/50 PG/VG and going for 18mg final
you would have to set the VG % at 25.5
Aiming for 12mg strength it would be 31.3% VG
If you really want to get technical you would have to figure in the amount of flavoring that is PG based to get it accurately at 50/50. Getting it to 80/20 would also require a bit more math.