Aspire Cygnet Revvo Set, User Manual

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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 dura -
tion of the puff and then inhaled into the lungs. This puffing technique is referred to
as moderate, mouth-to-lung vaping and is just like smoking a tobacco cigarette. 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.)
Sub-ohm vaping (direct lung inhalation)
While puffing, the vapor of an e-cigarette is directly inhaled into the lungs. This
puffing technique is referred to as sub-ohm vaping with direct lung inhalation.
To achieve this, there must be low puffing resistance and a strong air supply to
the evaporator head. Both have a positive effect on producing large quantities of
vapor. Evaporator heads that support this puffing technique in the sub-ohm range
(resistance usually < 1 ohm) are often referred to as DL (direct lung) heads.
(Other abbreviations include DTL and D2L)
General information regarding puffing techniques while vaping
Notes & Precautions