Two physically isolated PCTG chambers (or 0.5 ml + 0.5 ml) keeping two extracts 100% separated until vaporization
Electronic or mechanical selector switching between Chamber A only, Chamber B only, or simultaneous A+B dual blend
Parallel equivalent load of 0.70 ohm in A+B mode, managed by pulse-width modulation (PWM) to prevent scorching
Supplied from EU stock in Haarlem, NL with custom silk-screen branding or two-tone anodised housings from 1,000 units
1. Engineering comparison: single-chamber 2 ml vs dual-chamber 1 ml + 1 ml Switch & Mix hardware
Standard 2.0 ml single-chamber disposables pass the entire 2.0 g extract volume through a single ceramic heating core over 400 to 600 draws. By draw 350, thermal cycling caramelizes residual lipids inside that single core. A 1.0 ml + 1.0 ml dual-chamber disposable splits the workload across two fresh 1.4 ohm ceramic cores while giving the consumer three distinct flavour profiles (A, B, and A+B) in one chassis.
| Parameter | Single-Chamber 2.0 ml Disposable | Dual-Chamber 1.0 ml + 1.0 ml Switch & Mix |
|---|---|---|
| Reservoir Architecture | 1 x 2.0 ml continuous PCTG chamber | 2 x 1.0 ml (or 2 x 0.5 ml) isolated PCTG chambers |
| Heating Core Load | 1 x 1.4 ohm ceramic core processes full 2.0 ml | 2 x 1.4 ohm independent cores (1.0 ml per core) |
| Airpath Geometry | Single central chimney | Twin isolated chimneys merging only at mouthpiece exit |
2. Dual-airpath isolation: how twin chimneys prevent terpene cross-bleed and condensation mixing
In poorly engineered dual-tank devices, both coils vent into a shared lower mixing plenum. Warm aerosol from Tank A condenses inside the unheated chimney of Tank B, contaminating the second flavour and causing severe spit-back. High-grade dual-chamber hardware routes two separate stainless-steel or postless polymer air tubes all the way to the top silicone mouthpiece seal so the two vapour streams only meet outside the lip aperture.
3. Dual-coil electrical load: why simultaneous A+B firing requires a 0.7 ohm equivalent high-drain cell
When the user selects simultaneous A+B blend mode, the controller fires two 1.4 ohm ceramic cores in parallel, presenting an equivalent resistance of 0.70 ohm. At 3.4 V direct output, a 0.70 ohm load draws 4.85 A (16.5 W), which would sag a standard 280 mAh cell and scorch live terpenes. Quality dual-chamber boards step down PWM duty cycle in A+B mode to 2.5 V to 2.7 V per coil and pair a 350 to 400 mAh high-discharge lithium-cobalt cell.
4. B2B filling protocol: dual-needle pitch calibration and 120-180 N mouthpiece press sealing
When filling 1.0 ml + 1.0 ml dual-chamber disposables on a semi-automatic filler or 5-channel CNC gantry, dispense 0.95 ml to 0.98 ml per chamber at 45 C using 14G or 15G blunt needles positioned at the outer tank corners so neither central air chimney is wetted. Cap within 90 seconds using a vertical arbor or pneumatic press calibrated to 120 to 180 N so both silicone chimney collars seal evenly.
FAQ
- Can I fill two different extract viscosities (such as distillate in Tank A and live resin in Tank B) in a dual-chamber disposable?
- Yes. Because Chamber A and Chamber B have independent intake apertures and separate 1.4 ohm ceramic heating cores, you can pair a thicker distillate in Chamber A with a terpene-rich live resin or flavour blend in Chamber B.
- How do I switch between Chamber A, Chamber B and simultaneous A+B mode on a dual-chamber disposable?
- Depending on the chassis SKU, switching is performed either via a 3-position mechanical slide switch on the base (Left = A, Center = A+B, Right = B) or via a tactile button click sequence (1 click cycles A / B / A+B, 2 clicks activates 1.8 V preheat, 5 clicks powers on/off).
Sources
- Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS) (recast), the official text on EUR-Lex.
- Regulation (EC) No 1907/2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), the official text on EUR-Lex.
- Regulation (EU) 2023/1542 concerning batteries and waste batteries, the official text on EUR-Lex.
Trade guidance for B2B buyers, not legal advice. We sell empty hardware only; you are responsible for the fill and for finished-product compliance in your market.
