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When vaping, a distinction is made between two pufng techniques:
Moderate Vaping (Mouth-to-Lung)
The vapor from an e-cigarette is rst collected in the oral cavity for the entire
duration of the puff and then inhaled into the lungs. This pufng 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 pufng on the
e-cigarette. Atomizer heads that support this pufng 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 Pufng Techniques while Vaping
UWELL Hypercar – Notes & Precautions