Raeis Mitha tests every Hayati device that Hayati Pro reviews. Raeis holds a Master's degree in Chemical Engineering from the University of Leeds, has formulated e-liquid since 2016, and has published more than 1,100 vape articles and product reviews across his career.
Credentials at a glance
| Role at Hayati Pro | Lead Reviewer: hands-on device testing and review authorship |
| Qualification | MSc Chemical Engineering, University of Leeds |
| Industry since | 2016, as an e-liquid mixologist |
| Own brand | X Series e-liquid, launched 2019 |
| Published work | More than 1,100 vape articles and product reviews |
| Based in | Preston, England |
Why a chemical engineer reviews vape hardware
Vaping sits at the point where a battery, a coil and a liquid meet, and most of what goes wrong in a device is a chemistry problem wearing a hardware costume. A pod that tastes burnt is a wicking failure. A liquid that mutes its own flavour is a ratio problem. A coil that dies in three days is drawing more power than its surface area can feed.
Raeis reads devices that way because he formulates the liquid that goes into them. Nine years of mixing e-liquid means he can tell whether a pod is underperforming because the coil is wrong for the blend, or because the blend is wrong for the coil. That distinction decides whether a Hayati review recommends a device or explains who should skip it.
How Raeis tests a Hayati device
Every Hayati review on this site follows the same protocol, and no device is reviewed from a specification list alone.
- Unbox and verify. The scratch panel is checked against the product verification tool before testing begins, on the same code path a customer would use.
- Log the specification. Pod capacity, nicotine strength and coil resistance are recorded against the manufacturer's own documentation, not against a retailer listing.
- Run the device to empty. The pod is vaped from full to dry, so the puff rating gets tested rather than repeated.
- Track the flavour curve. Flavour is scored at the start, the midpoint and the last third of the pod, because most devices lose their character before they lose their liquid.
- Cycle the battery. Charge behaviour is recorded across repeat cycles, and any device that runs hot or charges erratically is flagged rather than scored.
- Write the verdict last. The recommendation is written after the testing, never alongside it.
What Raeis covers on Hayati Pro
Hayati Pro stocks one brand, so the review remit is narrow and deep rather than broad and shallow.
- Device reviews across the Hayati, Liora, Quokka and Finebar ranges.
- Flavour rankings built from the verified catalogue: 62 flavours on the Pro Max+, 41 on the Pro Ultra+, 21 on the Pro Ultra+ Shisha, 30 on the Finebar.
- Head-to-head comparisons where two Hayati devices genuinely compete for the same buyer.
- E-liquid format guidance covering nic salts, 50/50, 70/30 and shortfills.
What Raeis does not do
No review on Hayati Pro claims a device is safe, and no review carries a health claim. Health information sits on the nicotine safety guide, attributed to the NHS. Vaping is less harmful than smoking, not risk-free.
How a Hayati Pro review gets published
A review Raeis writes does not publish on his word alone. Every draft is checked by Yusuf Patel, our senior editor, who verifies the specification against manufacturer data, checks the TRPR position, and sends anything unverifiable back rather than softening it.
A specification that cannot be sourced is cut from the review. A claim that cannot be defended is cut from the review. That is why some Hayati reviews on this site carry fewer numbers than competitor pages carrying more.
Find Raeis elsewhere
Sourcing, verification and the company behind this store are set out on the why UK vapers trust Hayati Pro page.