If you vaporize marijuana you know that using oils may be expensive. This, fortunately, has been offered a solution by one YouTuber, providing a free tutorial and a way to make your own vaporizer liquid. This kit contains:250ml of 99.9% USP – Food Grade Vegetable Glycerin250ml of 99.9% USP – Food Grade Propylene Glycol5 x 10ml Sterile Storage Bottles With Dropper & Child Proof Lid2 x 10ml Sterile Syringes5x 2ml Sterile Syringes.Here are the instructions, written out:1: Pre heat a fan oven to 100C or 220F2: Grind herbs until medium to fine3: Place herbs in ceramic dish and cover with foil.4: Place the dish into the oven for 30-40 minutes.5: Prepare the solution use a ratio of 8ml liquid to 1g herb for a low strength, 5ml of liquid for a medium strength6: Use 7 parts Vegetable Glycerine to 3 parts Propylene glycol7: Remove herbs from the oven and allow to cool before removing foil8: Place herbs into mason jar containing solution and mix well.9: Place jar into hot water bath and shake/swirl every 15-20 minutes.10: Continue this for 2-3 hours.11: Keep lid on for the entire process.12: Once the time is done, remove from the heat and allow the jar to cool until you can handle it safely.13: Place contents of the jar into material, and then proceed to squeeze out the liquid. You can use a potato/rice press, fine sieve, cheese cloth to help with this process.14: Collect liquid with syringes and place into the dropper bottles.15: Add any flavourings your might want to add (optional)16: Enjoy end product, store in a cool – dark place and use in any e-cigarette you wish. Product will last up to 12 months.