Vaping Knowledge Index – Letter F
Browse Glossary by Letter
Estimated reading time: 14–16 minutes
Technical level: Intermediate to Advanced
Audience: Adult users (18+) in Ireland
Technical Definition (AEO)
Letter F vaping terminology covers flavour behaviour in real systems, firing mechanics and latency, firmware control, filling and flooding dynamics, fast charging considerations, and thermal decomposition context.
Terms Beginning with F
Factory Coil
Factory coil is a pre-manufactured coil head designed for direct installation (no manual building). Output consistency depends on resistance stability, wicking density, and manufacturing tolerances.
Fast Charging
Fast charging describes accelerated battery charging behaviour managed by the device’s charging circuitry. Charge rate is constrained by current regulation, cell temperature, and safety cutoffs.
Fill Port
Fill port is the designated inlet for adding e-liquid to a pod or tank. Seal integrity and pressure equalisation affect leakage resistance.
Firmware
Firmware is embedded software controlling chipset logic (power regulation, safety cutoffs, interface behaviour, and protection routines) within regulated devices.
Firing Button
Firing button is an input switch that initiates power delivery from battery to coil (directly or through chipset control logic).
Firing Delay (Latency)
Firing delay is the interval between activation input (button press or draw detection) and coil energisation. Lower latency improves perceived responsiveness and consistency, particularly under changing battery voltage or load.
Fixed Wattage Device
Fixed wattage device operates at a predetermined output level without user-adjustable power control.
Flavour Concentrate
Flavour concentrate is a high-strength aromatic formulation intended for dilution in DIY e-liquid mixing. Accurate dilution impacts stability, clarity, and final sensory profile.
Flavour Fade
Flavour fade is reduced flavour intensity over time due to coil residue formation, reduced wick permeability, sensory adaptation, or degradation of volatile compounds under heat exposure.
Flavour Ghosting
Flavour ghosting occurs when residual aromatic compounds from a prior e-liquid remain in wick fibres, chamber surfaces, or sealing materials, influencing the perceived profile of a new liquid. Typical management is coil replacement and/or thorough cleaning of the atomiser chamber and seals.
Flashpoint
Flashpoint is the temperature at which vapour from a compound may ignite in the presence of an ignition source. This concept is primarily relevant in controlled laboratory handling and safety-aware DIY mixing/storage contexts, rather than routine device operation.
Flooding
Flooding occurs when excess e-liquid saturates the coil chamber, reducing effective vaporisation. Common signs include gurgling, spitback, and leakage (depending on airflow and seal condition).
Freebase Nicotine
Freebase nicotine is the unprotonated form of nicotine traditionally used in e-liquids. It differs from nicotine salts in pH behaviour and perceived throat sensation characteristics.
Formaldehyde (Thermal Decomposition Context)
Formaldehyde is a carbonyl compound that may form as a byproduct of thermal decomposition under extreme dry-heating conditions. Regulated devices and proper wicking are designed to avoid sustained overheating scenarios that enable decomposition pathways.
Quick MATRIX: Performance & Risk Control (F)
| Factor | System area | What it changes | Practical control variable |
|---|---|---|---|
| Flavour Ghosting | Wick / seals / chamber | Profile contamination between liquids | Replace coil; clean chamber and seals |
| Firing Delay | Chipset / contacts | Responsiveness and output consistency | Firmware control; contact condition |
| Flooding | Coil chamber / airflow | Reduced vaporisation; leakage risk | Filling technique; airflow handling; seal integrity |
| Thermal Overheating | Coil / wick saturation | Decomposition pathways under dry heat | Avoid dry hits; ensure saturation; regulated limits |
Safety & Compliance Notes (Ireland)
- 18+ only: This content is intended for adult users in Ireland.
- Regulatory context: Nicotine product notification frameworks (EU-CEG) apply where relevant.
- Environmental responsibility: Dispose of batteries and electronic waste through authorised Irish WEEE channels.
FAQ
What is flavour ghosting in a pod or tank?
Flavour ghosting is residual aroma from a previous e-liquid remaining in wick fibres, chamber surfaces, or seals and influencing the taste of a new liquid.
What usually fixes flavour ghosting fastest?
The fastest method is coil replacement. For persistent ghosting, also clean the chamber and inspect/clean sealing areas that may retain aroma compounds.
What does firing delay (latency) mean in practical use?
Firing delay is the time between activation input and coil energisation. Lower latency improves responsiveness and can stabilise perceived output consistency.
What does flooding mean and what are typical signs?
Flooding is excessive e-liquid in the coil chamber reducing effective vaporisation. Common signs are gurgling, spitback, or leakage depending on airflow and seals.
Intent Discloser
This page provides neutral technical educational information for adult users (18+) in Ireland. It does not promote specific products.