Sourcing high-purity krypton gas from China
High-purity krypton gas from China carries 4% UK import duty under 2804 29 90 00, with no listed anti-dumping or countervailing duty or suspension. Cylinders used in Great Britain must be approved transportable pressure equipment. Cambridge China Bridge sources high-purity krypton gas.
Krypton duty and tariff controls
Read from the UK Trade Tariff on 1 October 2026, heading 2804 covers hydrogen, rare gases and other non-metals. Krypton falls under other rare gases, 2804 29 90 00, at 4% duty for goods from China. No anti-dumping duty, countervailing duty or suspension is listed for this line. The table shows buying specifications sharing that code. For the wider heading, see our argon guide.
The tariff attaches waste import and export controls. For a shipment supplied as waste into England under notification controls, the authorities of dispatch, destination and transit must consent before shipment. For goods from China, ask your customs broker to confirm waste status and the applicable procedure; also check the attached export control before arranging a return.
Confirm the gas composition and cylinder ownership arrangements before choosing the commodity code. Gas cylinders may need separate declaration if they are not returned. Ask the broker to check gas and cylinder entries separately.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| High-purity krypton gas in cylinders | 2804 29 90 00 | 4% | None |
Specify krypton purity and the cylinder connection
Specify krypton as a single gas and state the intended process. Put the required purity and separate limits for moisture, oxygen, nitrogen, hydrocarbons and other rare gases in the purchase specification. Ask the supplier to identify the analytical method and detection limit for each impurity, rather than accepting a grade name alone.
Agree the gas quantity and its measurement conditions, filling pressure, cylinder material, valve outlet and regulator connection. Request analysis linked to the filling batch and cylinder serial numbers. Set out cylinder ownership, return arrangements and responsibility for investigating a failed analysis.
Confirm with the relevant authority which transportable pressure equipment approval requirements apply to cylinders used in Great Britain. Obtain conformity and periodic inspection records before shipment. Chemical suppliers are responsible for correct labelling and packaging before placing substances on the market. Ask for the safety data sheet and check that the labels describe the supplied gas.
Worked duty example
Illustrative example, not a quote: Illustrative order: a batch of high-purity krypton cylinders for a laboratory under 2804 29 90 00, invoiced at £15,000 free on board, with £2,000 of freight and insurance to the UK. The customs value is £17,000. Duty at 4% is £680. Import VAT at 20% is charged on the customs value plus duty, £17,680, so it is £3,536. Import taxes total £4,216; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £680 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Analysis: match the certificate to the filling batch and cylinder serial numbers; check the agreed impurity limits and analytical detection limits.
Cylinders: check approval markings, periodic inspection dates, serial numbers, valve protection and signs of damage.
Connection: compare the actual valve outlet with the agreed regulator connection; check the cap, seal and supplied fittings.
Arrival: have a competent gas handler check the delivery condition and arrange sampling against the purchase specification. Record discrepancies through the inspection process.
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What goes wrong
A purity figure can conceal moisture or another impurity that matters to your process. A general certificate may not identify the actual filling batch. Sampling through a contaminated regulator can also produce a misleading result. Agree a clean sampling method and independent retest arrangements before accepting the batch.
An incompatible valve outlet can prevent connection despite acceptable gas purity. Damaged valve protection, expired cylinder inspection records or unclear cylinder ownership can also obstruct use or return. Compare photographs and documents before dispatch, then reconcile them with the cylinders received.
Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.
Frequently asked questions
What is the UK import duty on high-purity krypton gas from China?
The supplied tariff data shows 4% duty under 2804 29 90 00, with no listed anti-dumping duty, countervailing duty or suspension.
What should a krypton certificate of analysis show?
Ask for the filling batch, linked cylinder serial numbers, purity, named impurities, measured results, analytical methods and detection limits.
Can I use Chinese krypton cylinders in Great Britain?
Confirm the applicable transportable pressure equipment approval requirements with the relevant authority. Check conformity markings, periodic inspection records and the valve connection before ordering.
Does the waste control mean my krypton order is prohibited?
The tariff attaches waste controls. Ask your customs broker to confirm waste status and the applicable procedure. Notified waste shipments into England need the relevant authorities' consent before movement.