Sourcing high-purity nitrogen gas from China
High-purity nitrogen gas from China pays 4% UK import duty under 2804 30 00 00, with no listed anti-dumping or countervailing duty or suspension. Cylinders must be approved transportable pressure equipment for use in Great Britain. Specify impurity limits and verify batch analysis. Cambridge China Bridge sources high-purity nitrogen gas.
Nitrogen duty and attached controls
Read from the UK Trade Tariff on 1 October 2026, heading 2804 covers hydrogen, rare gases and other non-metals. This guide covers high-purity nitrogen gas only. Its nitrogen line, 2804 30 00 00, carries 4% duty for goods from China, with no listed anti-dumping or countervailing measure and no suspension. The table shows purchasing formats and uses under the same nitrogen code, rather than separate tariff subdivisions.
The tariff attaches import and export waste controls to the nitrogen line. If the consignment is waste subject to notification controls, it cannot be shipped until the authorities of destination, dispatch and transit have consented. For a China-to-England shipment, confirm the waste status and applicable procedure with your customs broker before dispatch. Ask the broker to confirm any waste export requirements before arranging returns.
Confirm the gas composition and cylinder arrangements through finding your commodity code. Cylinders themselves fall under heading 7311 and may need separate declaration if not returned. For the wider heading, see high-purity argon gas.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| High-purity nitrogen gas in individual cylinders | 2804 30 00 00 | 4% | None |
Specify nitrogen impurities and cylinder interfaces
Specify the intended instrument or process, minimum nitrogen purity and separate limits for oxygen, moisture and hydrocarbons. Agree the analytical methods, reporting units and detection limits. Request actual batch results rather than a certificate stating only that the gas meets a grade name. Match the certificate to the filling batch and cylinder identifiers.
Agree cylinder capacity, filling pressure, valve outlet, regulator compatibility, valve protection and ownership or return arrangements. New cylinders supplied directly from China for placement on the Great Britain market need the UK Rho conformity marking and supporting conformity assessment records. A purity certificate does not establish cylinder approval.
The importer is responsible for chemical classification. Classification and labelling must be carried out by someone with scientific competence. Ask for the safety data sheet and check the supply labels against the classification before sale. Arrange testing and certification around the agreed impurity limits and cylinder documentation.
Worked duty example
Illustrative example, not a quote: Illustrative order: 50 filled cylinders of high-purity nitrogen gas under 2804 30 00 00, invoiced at £4,000 free on board, with £2,000 of freight and insurance to the UK. The customs value is £6,000. Duty at 4% is £240. Import VAT at 20% is charged on the customs value plus duty, £6,240, so it is £1,248. Import taxes total £1,488; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £240 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Batch identity: match cylinder identifiers and filling records to the certificate of analysis, invoice and packing list.
Purity: check nitrogen assay, oxygen, moisture and hydrocarbon results against the contract, including the test methods and detection limits.
Cylinders: check approval records, conformity markings, periodic inspection stamps, valve outlets and fitted caps or guards; record damage before acceptance.
Documents and labels: check the safety data sheet, dangerous goods declaration and gas labels for consistency. Use the quality inspection guide to define the inspection scope.
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What goes wrong
A grade name can hide different impurity limits. A certificate may describe the production gas rather than the delivered filling batch, while moisture introduced during filling can undermine the intended application. Agree batch traceability and independent verification before shipment.
The gas may meet its specification while the cylinders have unsuitable valve outlets, overdue inspection marks or missing approval evidence. Resolve the cylinder and regulator interface before ordering, and hold damaged or undocumented cylinders apart pending assessment.
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 nitrogen from China?
The supplied tariff facts show 4% under 2804 30 00 00, with no listed anti-dumping or countervailing duty and no suspension.
Does higher nitrogen purity reduce the duty?
The supplied nitrogen line has no separate purity subdivision or tariff suspension. Its listed duty remains 4%.
What should a nitrogen certificate of analysis show?
Ask for the filling batch, cylinder identifiers, nitrogen assay, oxygen, moisture and hydrocarbon results, analytical methods and detection limits.
Can I use Chinese nitrogen cylinders in Great Britain?
Check approval before ordering. New cylinders supplied directly from China for placement on the Great Britain market need the UK Rho marking and supporting conformity assessment records.