5, 10 or 50ml Bottle
Use at 5% to 8% of total volume.
Use caution with this product.
Add it to your eliquid carefully and follow the directions. There is a big difference between drinking a Coke or a can of Red Bull and adding e-caffeine to your e-liquid. Different delivery mechanisms to the blood stream means different volumes allowed.
The best approach is to count drops.
Because only tiny amounts will be used, trying to measure in a pipette or other device is not accurate enough. Drops, on the other hand, are consistent and easily controlled.
Most e-liquids work out to 25 drops per ML. Using this general information helps you to covert ML to Drops and vice versa. It comes in handy when trying to calculate how much e-caffeine to use.
For example, if you have a tank you like to use and you know it contains 3ml of juice, you can calculate how much e-caffeine to add.
3ml juice = about 75 drops total in your tank
Take those 75 drops times 5% and it comes out to 4 drops of e-caffeine to add to your tank.
Here's some other quick calculations . . .
10 ML Bottle Size = 250 Total Drops
5% of 250 amounts to 12.5 drops. If you have a full bottle of eliquid, add 12 or 13 drops of e-caffeine to end up with roughly 5% of the total volume.
30ML Bottle Size = 750 Total Drops
5% of 750 amounts to 37.5 drops. If you have a full bottle of eliquid, add 37 or 38 drops of e-caffeine to end up with roughly 5% of total volume.
It seems like a lot of counting, but in reality it only takes a minute. If you are careful to squeeze the bottle very gently you'll find the drops dispense in an even and controllable fashion.