Increasing pre-mix nic level

Hi all, first post and of course a question.
I usually vape RY4 at 18mg but lately find it not quite strong enough but the next
level at 24mg is too strong for me. I have mixed equal amounts of 18mg and 24mg
together and found it just right. (would that be 21mg ? )

To the question: I have a bottle of 100%vg 100mg nic and would like to know how much
to add to 20ml of 18mg premix to bring it to my magic number which may or maynot be 21mg/

Will start mixing from scratch soon and thanks in advance for any replies.

 

Approx 0.75ml of VG100

 

Wow, that little of an amount. Thanks for your reply
BTW, was my 21mg guess correct?

 

Just wanted to make sure the figures in my original post weren't misleading be.comse I stated
100% nic, the nic I have is Pure-Nic Niotine 100mg/ml-60ml

 

Yes, 21mg is what you get when mixing equal amounts of 18mg juice and 24mg juice.
I worked it out using 100mg/ml nic. A formula is:

 

Cheers for that

 

Can you follow the formula easily enough? If not, I'll add what each parameter means.

 

That would be great if you could, maths is definately not my forte

 

vol-add is the amount of the base to add;
vol-start is the volume you started with ie 20ml
end-mg is the mg/ml you want to end up with ie 21mg/ml
start-mg is the mg/ml you started with ie 18mg/ml
nic-mg is the mg/ml of your nic base ie 100mg/ml

So the top line would be 20 x (21-18) = 20 X 3 = 60
Bottom line would be (100 - 21) = 79

vol-add then equals 60/79 which is really close to 0.75ml.

 

http://forums.canukvapers.com/vendor-general/20617-ozejuice-com-2.html#post465140

this calc will work it out

E-Liquid Recipe Name

and yes add
ADD > E2 / G2 ATA2 (Add ML) 0.76

 

Or ... use a calculator

 

Thanks guys, can't thank you enough.