Mixing your own
juice is super simple. Since most juices come in 6mg increments (0mg, 6mg, 12mg, etc.), and 6mg is too much for me to drip, I would buy 2 bottles - one of 6mg and one of 0mg, and mix them to get 3mg. But, even 3mg became too much for dripping, so I got 0mg
juice and 50ml of 100mg nicotine base (70VG/30PG) from Nude Nicotine and mixed my own 2mg.
I highly recommend getting this free
juice calculator. I compared it to at least 20 online calculators to ensure accuracy. I have a dropper bottle (previously used for medicine) that has markings up to 1ml. They say "on average" there are 20-25 drops/ml, but I counted 26 drops from mine, so I entered 26 into this calculator (extra nice it allows you to do this).
I also used a micrometer to measure what the vape shop sold as an 18ml bottle, did the math, and confirmed it's really 18ml. Maybe a bit extreme, especially considering the low mg's, but it's true to my nature.
So, 9 drops of 100mg base into an 18ml bottle of 0mg = 2mg strength.
eJuice Me Up - Best eJuice Calculator