Pure PG or VG base to prepare your own e-liquid.
PG/VG - USP/EP is tested for compliance with specifications of:
• United States Pharmacopeia (USP)
• European Pharmacopoeia (EP)
PG (Propylene Glycol )
VG (Vegetable glycerin) - 100% natural
PGG - Mix of PG/VG (Ratio of PG and VG you can mix according to your preference)