How Often Should Gas Cylinders Be Tested?
A common question: how often should a gas cylinder be tested? The honest answer is that it varies — here is how to tell.
In practice
Go by the stamp
The test date stamped on your cylinder is the reliable guide — not a remembered rule of thumb.
We check before filling
Unsure whether a cylinder is due? We read the stamp on every cylinder pre-fill, so you never have to guess.
Why there is no single interval
Periodic inspection and test intervals are set by the cylinder standard and the gas it carries, so there is no single number that fits every cylinder. Many common cylinders fall on a multi-year cycle, but the only reliable guide is the test date stamped on the cylinder together with current UK regulations.
- Read the stamped test date — it tells you when the cylinder was last validated.
- Different gases and cylinder constructions carry different intervals.
- If in doubt, ask before filling — we check every cylinder pre-fill.
Let the stamp decide
Rather than trying to remember a rule, work from the cylinder itself. The stamped date records the last successful test, and current regulations set the interval for that cylinder and gas.
- Find the stamped test date on the shoulder or neck ring.
- Compare it against the interval for that cylinder type and gas.
- Worn, damaged or unclear stamp? Bring it in and we will check it for you.
Read the stamped test date
Forget rules of thumb — the cylinder tells you what you need to know. The date stamped on the shoulder or neck ring records when it last passed periodic inspection, and current regulations set the interval for that cylinder and gas. If the date is within interval the cylinder is in test; if not, it needs revalidating before it can be filled.
Getting a cylinder back in test
Check the stamp
Bring the cylinder in or ask at refill — we read the stamped test date to see whether it is still in test or due for revalidation.
Inspect and revalidate
If it is out of test we arrange the periodic inspection and any testing the cylinder needs, carried out to current UK requirements.
Re-stamp and return to use
A cylinder that passes is re-stamped with a new test date and put back into service, so it can be filled again. One that fails is withdrawn.
Frequently asked questions
Is it every 10 years?
Some cylinders are on roughly a ten-year cycle, but intervals vary — always go by the stamped test date and current regulations.
How do I know when mine is due?
Read the test date stamped on the shoulder or neck ring and check it against the interval for that cylinder and gas. We also read it on every cylinder before filling.
The stamp is worn — what now?
Bring the cylinder in. We will check the markings and, if the stamp is unclear or the cylinder is out of test, arrange revalidation before refilling.
Does the gas affect the interval?
Yes — the interval is set by the cylinder standard and the gas it carries, which is why there is no single number for every bottle.
Not sure if your cylinder is in test?
We check every cylinder before filling, and can arrange retesting if it is out of date. Talk to our team.