What Is the Difference Between Open and Closed Pod Systems?
A clear explanation of refillable open pod systems versus sealed prefilled closed pods and where the Imp Jar Pod System fits.
The short answer
The Imp Jar Pod System is an open pod system, meaning the pods are refillable and the device can be filled with any compatible e-liquid you choose. Closed pod systems use sealed, prefilled pods that cannot be topped up and are discarded once empty.
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The Imp Jar Select 10K device and replacement pods. UK made in Maidstone, Kent.
The key practical difference
With an open system like the Imp Jar Pod System, you buy e-liquid separately and top up the pod yourself, giving you the freedom to choose any compatible flavour, strength or brand. With a closed system, the pod arrives prefilled and sealed, offering convenience at the cost of choice, since you are limited to whatever flavours the manufacturer sells in that exact pod format.
Cost and waste considerations
Open systems generally work out cheaper over time, since you are buying e-liquid in bulk rather than paying for a prefilled pod each time and produce less overall waste since the pod itself is reused across multiple refills rather than discarded after a single fill.
Open versus closed at a glance
| Factor | Open (Imp Jar Pod System) | Closed pod systems |
|---|---|---|
| Refillable | Yes | No, prefilled and sealed |
| Flavour choice | Any compatible e-liquid | Limited to that brand's prefilled pods |
| Cost over time | Generally lower | Generally higher per ml |
Common questions about open and closed systems
Can I use prefilled pods in the Imp Jar Pod System?
No, the device is built around its own refillable open pod, it is not compatible with sealed prefilled pods from other brands.
Is an open system harder to use than a closed one?
It involves one extra step, filling the pod yourself but otherwise operates just as simply as a closed system once set up.
Which produces less waste?
Open systems generally produce less waste, since the same pod is reused across multiple refills rather than discarded after a single use.
Part of the Imp Jar Pod System guides hub
This page is part of our complete Imp Jar Pod System guide series. Return to the Imp Jar Pod System Guides Hub for the full topic overview. Browse the related guides below.