thats all done in the processing stages.. millions of tonnes of the juice is made ( to a certain mix/recipe/strength ) at a time and sampled at different stages of the process and adjusted acordingly.. by men in white coats. im sure there must be a video on youtube detailing whats done, but theres only one grade now... ( except the ultimates and v powers etc) and the industry standard will probably be very similar where ever you are in the world.. when it hits the right notes in the lab, it gets released.... well ours does...
aditives are added at the point of loading by means of in line injection...
now i want to go talk to our white coat staff.. they'll probably bu66er me off... :shruriken: