Hi, I was wondering if anyone could tell me if the know what base is used in hangsen concentrate please? PG or VG based? I cant seem to find out from bottle or net so if anybody could tell me it would be much appreciated. Newbie to mixing just trying to concoct a first recipe but would like to be sure of flavouring base? Thanks have found ejuice me up calculator and POTV calculator but would rather be sure about flavour base !