very good but very caustic amphetamine.
If insufflated it burns like hell but has high potential (already active at 25mg).
Orally it is almost inactive (up to 150mg worked very little on my rats).
Soon I will leave my observations regarding the E-Liquid tests.
m3xir, I use a small monocular magnifier and put it next to the phone camera. it's like a toy and it's very cheap (in fact it has plastic lenses) but it's fun!