The end result you will get is twenty five % THC concentration. Multiplying the volume of ml's by 25mg/ml and dividing the value by 1. As an illustration, in case you have a 50ml can of liquid extract with 25mg of THC per ml. One of the key great things about using a THC vape pen is it is a healthy and safe alternative to smoking. It means that the end user is able to appreciate the impact of...