You can use many different tools to fill the Canteen™. Unscrew the black mouthpiece from the top of the Canteen™ to expose the tank and center air tube.
When filling make sure not to drip any Smoke Juice down the center tube. Drop the Smoke Juice in between the outer wall of the center air tube and the outside wall of the Canteen™. Fill to the top graduated mark that will read as 0.9mL.
They hold about 1mL of Smoke Juice but we recommend filling to the 0.9mL mark to prevent overfilling. Screw the black mouthpiece back onto the Canteen™ and you are ready to start vaping!