Changing juice nic strength

[smarties]

Stupid question but I can't figure it out even tho I've been mixing for 3-4 years, Mrs S bought some liquid at 14mg and it's not strong enough as she is just trying to quit stinkies, so how much 70mg nic base would I have to add to bring it up to 18mg?


I'm sure it's simple to work out but it's bamboozling me completely 

[smarties]

Ahh ignore this I just did a search and found the ejuice me up calculator which works this out and a lot more...why have I not had that before doh!

[Postmodern Smoking]

The nic combine tool from the toolbar of ejuice me up is one way to calculate this.... with a bit of trial and error on how much 70mg/ml is required to get the answer to 18mg/ml.



So I make it that for every 10ml of the 14mg/ml e-liquid, you would need to add 0.78ml of 70mg/ml nic base to make the resultant strength 18mg/ml.