Thank you - going back to feeling pathetic nowYou need to add 2.1ml of 72mg/ml nicotine per 50ml shortfill.
You need to add 2.1ml of 72mg/ml nicotine per 50ml shortfill.
I don't mean to contradict, more a clarification for my benefit. I have 6 Dripworx shortfills, but no nic shots. These are 50ml without the shots (60 with) and the calculators I have used state 2.5ml of 72mg, plus 7.5ml of vg/pg to make it 60ml. It's 2.1ml of nic to make up a total of 50ml juice inc any nic.
Just checking I've got it right as I need to get my shots sorted asap.
Edit: Just noticed the op isn't topping up with extra base liquid, doh!
The calculation is Total ml of liquid / start nic strength X desired nic strength.
So for 60mls its 60 / 72 X 3 = 2.5. You add the 2.5 to the 50ml which leaves you 7.5ml to dilute with PG/VG.
For 50ml its 50 / 72 X 3 = 2.1, but bear in mind the final volume is actually 52.1ml so the calulation is slightly out, but we really are slitting atoms there.