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Hajizadeh A, Howes S, Theodoulou A, Klemperer E, Hartmann-Boyce J, Livingstone-Banks J, et al

But if you just want to have a general feeling, you can actually use a very rough but good formula: Nicotine content = nicotine strength oil volume For example: the e-cigarette in your hand, the oil is 20mg/ ml, the capacity is 2ml, then it is: 20 2 = 40mg total nicotine content What does this 40mg mean

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