®
40
RENOVA™ ZERO - NOTES & PRECAUTIONS
General Information about Puffing Techniques while Vaping
Moderate Vaping (Mouth-to-Lung)
When vaping, a distinction is made between two puffing techniques:
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)
