I have older bottles of juice laying around and I wanted to know if there was an easy way to test how much nicotine (2.4,1.8,etc) is in them, you know, to see if it degraded over time? Also, not that I don't trust vendors, I want to make sure I got what I ordered. I'm a 2.4 vaper (I think?) and my goal is to reduce strength over time without having nic-fits. I know there's other factors like chain vaping (I'm working on that) involved but first thing first, how much nicotine is in my juice? 
The wall I bang my head against, thanks you in advance.
RH

The wall I bang my head against, thanks you in advance.
RH