How many of our 18mg nicotine shots will you need to add
Our nicotine shots come in 10ml bottles.
If mixing 50ml of 3mg You will need to add 8.5ml of our Nicotine bottle shot = 1 bottle needed
If mixing 50ml of 6mg You will need to add 17ml of our Nicotine bottle shot = 2 bottles needed
If mixing 100ml of 3mg You will need to add 17ml of our Nicotine bottle shot = 2 bottles needed
If mixing 100ml of 6mg You will need to add 34ml of our Nicotine bottle shot = 4 bottles needed
Example pic of a 6mg 100ml order with 4 x Nicotine shot bottles.

how do I know which device they are suitable for? for cigarette or vaping https://forum.facmedicine.com/threads/fda-says-vape-liquid-contains-erectile-dysfunction-drug.37477/
They will work in any vape that can be refilled.