Well done Rupert and Noe. You covered every aspect of it. One thing i think is important to note especially to newbies looking to purchase and or mix nicotine into their liquids is; You may see on websites eg. Hiliq that you can purchase 10% nicotine or 20% nicotine liquid. These percentages refer to; 10% = 1000ml (1 litre)of 100mg. 20% = 1000ml (1 litre)of 200mg. 10% DOES NOT MEAN MIX YOUR LIQUID 10% NICOTINE. When using calculations for these types of liquids keep in mind you are using 100mg or 200mg liquid. I for one was a little confused when i first saw this but after a quick bit of research found it easy to work out the ratio.