The UK has strict rules for vaping products. All e-cigarettes and e-liquids sold must follow specific regulations set by the Medicines and Healthcare products Regulatory Agency (MHRA).
For vapers, this means any device you buy should be legally compliant. A common question is about high-puff kits like the Hayati Pro Ultra. With its massive 25,000-puff claim, it pushes the boundaries of typical disposable-style vapes.
This guide will break down the UK’s vaping laws. We will see how the Hayati Pro Ultra fits into these rules. Indeed, understanding these regulations helps you make informed and legal choices.
TPD and Strength Limits
The main law governing vapes in the UK is the Tobacco Products Directive (TPD). One of its most important rules concerns e-liquid strength. There is absolutely no vaping product sold legally that can contain more than 20mg/ml of strength.
As a matter of fact, this is approximately a 2% strength. The Hayati Pro Ultra uses 20mg nic salt e-liquid, which meets this legal limit. So, in terms of eliquid content, it is compliant. This ensures a strong but controlled e-liquid strengt delivery for users.
The 2ml E-Liquid Capacity Rule
Another key TPD regulation is the vape’s tank capacity. A single vaping tank or pod cannot hold more than 2ml of e-liquid. This is where devices like the Hayati Pro Ultra Plus 25000 Box of 5 use a clever and legal design since the kit does not have a single large tank. Instead, it includes a 2ml pod and separate 10ml refill containers.
Furthermore, the 2ml pod is the only part that is technically the “tank” as you vape from it. The larger 10ml bottles act as external reservoirs that automatically feed the pod. This clever design follows the 2ml tank rule perfectly. The part you vape from never holds more than 2ml at one time, but the extra liquid in the separate containers means you can use it for much longer. As a result, this setup is TPD-compliant because the atomiser (the pod you inhale from) does not exceed the 2ml limit at any one time.
Are Massive Puff Counts Like 25,000 Legal?
There is no specific law against a high puff count. The legality is determined by the device’s adherence to the rules mentioned above. A product claiming 25,000 puffs is not illegal if it follows the 2ml tank and 20mg strength rules.
However, it is very important to understand that this puff count is an estimate. The manufacturer’s number is based on ideal conditions and short puffs. In real-world use, taking longer draws will significantly lower the total number of puffs you get. In fact, the number itself is basically a marketing claim, not a regulated measurement.
Battery Safety and Consumer Protection
While not part of TPD, general product safety laws apply to vape batteries. The 1250mAh battery of the Hayati Pro Ultra should be non-hazardous to the user. The devices sold by reputable retailers are guaranteed to be of this standard.
In addition, it should be mentioned that the kit lacks a charging cable. Your own USB Type-C cable will be required. A good quality cable should be used at all times and the cable source must be trusted to be safe during charging and to safeguard the battery life. Buying from a trusted UK seller is indeed the best way to ensure you get a genuine, safe product that meets all required regulations.
How to Identify a Legally Compliant Vape
When buying any vape kit in the UK, look for these signs of compliance:
20mg/ml Strength: The product should clearly state this.
2ml Tank Capacity: The device should have a tank size of 2ml or use a legal auto-refill system like the Hayati Pro Ultra plus box of 5.
MHRA Notification: All legal products must be registered with the MHRA. Sellers should be able to provide this information if asked.
UK-Based Seller: Purchasing from an established UK business is your best guarantee of buying a legal product.
Conclusion
The Hayati Pro Ultra is legally sold in the United Kingdom. Its design also intelligently satisfies the main requirements: the e-liquid used is the legal 20mg/ml strength, and its two-part pod design meets the requirement of 2ml capacity of the tank.
Although the 25,000-puff statement is not a legal standard as it is a marketing estimate, it does not contravene any laws. The legality of the device is strongly anchored on the compliance with the tank caps. The device’s legality is firmly based on its adherence to tank limits.
To guarantee that you are purchasing a fully compliant and safe product, you should only buy from reputable, established UK retailers. This stops you from buying illegal products that are brought into the country. It also makes sure the vape is safe and follows all UK rules.



