Sourcing gas chromatographs from China

UK duty on gas chromatographs

Heading 9027 covers physical and chemical analysis instruments. Gas chromatographs are candidates for 9027 20 00 00, covering chromatographs and electrophoresis instruments. The table repeats that code for different detector and sampling configurations. Identifiable parts and accessories may fall under 9027 90 00 00, subject to separate classification.

Read from the UK Trade Tariff on 10 December 2026, both selected lines carry 0% duty for goods from China, with no listed anti-dumping or countervailing duty, suspension or attached control. The different residual line 9027 89 90 00 has a mercury export control attached; if your broker proposes that code, ask them to confirm the control's relevance.

Confirm the commodity code using the operating principle, detector configuration and shipment contents. Have separately shipped columns, samplers and consumables reviewed individually. For wider heading coverage, see sourcing HPLC systems.

Specify the detector, gas supply and separation method

Define the samples, target compounds and intended analytical method. Agree the detector type, inlet arrangement, column compatibility, oven programme, sensitivity and repeatability acceptance criteria. Ask the factory to demonstrate separation using a representative sample and provide the raw chromatograms, method settings and integration results.

Specify carrier and detector gases, required purity, inlet pressure, regulators, tubing and connectors. Agree exhaust arrangements, leak-check procedures and shutdown behaviour. For an autosampler, confirm vial compatibility, injection settings and carryover checks. List the supplied columns, syringes, liners, seals and replacement consumables. Confirm software licensing, raw-data access and operation without a remote connection.

For Great Britain sales, assess electrical safety against the rated supply, electromagnetic compatibility and hazardous-substance restrictions for the exact model. Request relevant declarations and supporting documents through testing and certification. Electromagnetic compatibility guidance recognises CE marking indefinitely. Electrical-equipment producers must register annually; establish whether your importing business holds that role.

Worked duty example

Illustrative example, not a quote: Illustrative benchtop gas chromatograph order for a small testing laboratory under 9027 20 00 00, invoiced at £10,000 free on board, with £900 of freight and insurance to the UK. The customs value is £10,900. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £10,900, so it is £2,180. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Analytical performance: repeat the agreed reference method and compare retention times, peak separation, response and carryover with the acceptance criteria. Retain raw files against the instrument's serial identification.

Gas path: inspect inlet fittings, tubing, regulators and supplied connectors. Have a competent technician check leakage, flow stability and the agreed shutdown functions before analytical testing.

Oven and sampling: check temperature programme execution, inlet operation, autosampler movement and vial fit. Inspect the column compartment and transport restraints for damage or loose components.

Identity and documents: match the instrument, detector, power supply and software to the order and conformity documents. For equipment within electrical safety scope, check that easily understandable English instructions accompany it. Use the inspection guide to agree checks before shipment and on arrival.

What goes wrong

A demonstration chromatogram can look acceptable while using a different column, detector or sample preparation from your intended method. Missing method settings prevent a meaningful comparison. Agree the complete test conditions and acceptance criteria before approving the factory sample.

Leaks, contaminated gas lines, unsuitable connectors and damaged inlet consumables can produce unstable baselines or poor repeatability. Software restrictions can prevent access to raw results after delivery. Put gas-interface details, consumables, software rights and commissioning responsibilities into the purchase specification.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.