I always thought that 7.2 was just another way of saying 72.
TPD compliant 1.8mg x 4 =7.2mg.
So 10ml of 7.2 is how i roll.
No, 7.2 is not the same as 72.
But 7.2% nic is the same as 72mg/ml (mg per ml).
You can fit 1000mg into 1ml.
1000mg of nicotine in 1 ml would be 100% nicotine. 100% or 1000mg/ml.
100mg of nicotine in 1ml would be 10% nicotine. 10% or 100mg/ml.
72mg of nicotine in 1ml would be 7.2% nicotine. 7.2% or 72mg/ml.
You vape MTL at 12mg. That's 1.2% or 12mg/ml.
I vape DTL at 3mg. That's 0.3% or 3mg/ml.
You add 10ml of 72mg/ml nic to your shortfills, resulting in 60ml at 12mg/ml.
If you say 1.2mg/ml of nic, that is so weak as to be getting close to zero nic.
You are confusing your percentages with your milligrams per millilitre.
You MTL vape at 1.2% nic, or 12mg/ml. Not 1.2mg/ml.