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When vaping, a distinction is made between two puffing
techniques:
Moderate Vaping (Mouth-to-Lung)
The vapor from an e-cigarette is first collected in the oral cavity
for the entire duration of the puff and then inhaled into the
lungs. This puffing technique is referred to as moderate, mouth-
to-lung vaping and is similar to smoking. To achieve this, there
must be a noticeable resistance when puffing on the e-cigarette.
Evaporator heads that support this puffing technique in the
moderate range (resistance usually > 1 ohm) are often referred
to as MTL (mouth to lung) heads.
(Other abbreviations include ML and M2L.)
General Information about Puffing Techniques
while Vaping
Notes & Precautions
