Help increasing NIC with premix

[yellowsnow]

I can't wrap my head around the amount of Nic to add.

I want to increase a premixed juice @ 12mg to as close to 18 mg as possible.
I need 15 ml @ 18 mg. I have 120 ml of premix and 100 mg/ml nic.
I just need to make a 15 ml bottle.

 

[mattiem]

Add .9 mls of your 100 mg/ml of nic to 14.1 mls of your 12 mg premixed

Please note: that is not nine mls, it is point nine mls.

 

[yellowsnow]

Thank you very much. I just couldn't get it.

 

[Boletus]

Add .9 mls of your 100 mg/ml of nic to 14.1 mls of your 12 mg premixed

Please note: that is not nine mls, it is point nine mls.

That gives you 15 ml at 17.28 mg/ml. If you add 1 ml of 100 mg/ml to 14 ml of 12 mg/ml, you get 15 ml of 17.9 mg/ml. I have blog that details the computations, and there is also an online calculator for combining juices/bases here:
DIY E-Liquid Combining Calculator