Sourcing excimer UV lamps from China

Excimer lamp duty and replacement parts

Read from the UK Trade Tariff on 30 September 2026, heading 8539 covers electric lamps and light sources. Its ultraviolet lamp line, 8539 49 00 00, carries 0% duty for goods from China. The supplied reading records no anti-dumping or countervailing duty, suspension or attached control for that line. Filtered and unfiltered lamps share the same candidate code in the table.

Separately imported lamp bases and other lamp parts also carry 0% in the supplied reading, without trade remedies or suspensions. The UK Trade Tariff attaches an import control of mercury to the lamp-base line. Confirm its application to your goods from China with your customs broker before shipping. The other-parts line has no attached control in the supplied reading.

Ask your broker to confirm the commodity code using drawings, the lamp construction and exactly what is supplied. Do not assume a complete treatment machine takes the bare lamp code. See the wider ultraviolet germicidal lamp guide for related products.

Specify the spectrum, filter and power supply

Write down the gas fill, intended wavelength, full emission spectrum, required irradiance at the working distance and measurement method. Identify whether the filter is integral or supplied separately. Ask for spectral measurements of the actual filtered assembly, including emissions outside the intended band, rather than accepting a nominal wavelength on a catalogue sheet.

Freeze the lamp dimensions, mounting, connectors, electrode arrangement, power supply model, operating conditions and cooling arrangement. Agree how output retention, starting behaviour and replacement compatibility will be checked. Request ozone measurements under the intended operating conditions and evidence supporting any germicidal performance claim.

For mains-powered lighting assemblies, ask the relevant authority to confirm the applicable electrical safety, electromagnetic compatibility and hazardous-substance rules, including any declaration and technical documentation requirements. Review their application to the supplied assembly through testing and certification. Where the electrical equipment safety rules apply, importers must ensure instructions are in easily understandable English.

Worked duty example

Illustrative example, not a quote: Illustrative order: 63 replacement excimer ultraviolet lamps for business service stock under 8539 49 00 00, invoiced at £12,000 free on board, with £600 of freight and insurance to the UK. The customs value is £12,600. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £12,600, so it is £2,520. 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

Identity: compare lamp markings, filter identification, connectors and power supply model with the approved sample and bill of materials.

Optical output: measure the spectrum and irradiance using suitable calibrated equipment, recording working distance, warm-up conditions and filter configuration.

Construction: inspect the envelope, seals, electrode connections, mounting and protective packaging for cracks, looseness or transport damage.

Operation: check starting, stable output, temperature and ozone under agreed conditions; test enclosure interlocks where supplied without exposing staff to the beam.

What goes wrong

A lamp can fit the housing yet fail the buying specification because its filter, gas fill or matching power supply differs from the approved sample. Checking only the nominal wavelength can miss unwanted emissions. Require written approval for changes and repeat the agreed spectral and operating checks on changed assemblies.

Treat output loss, failed starting, damaged seals and inconsistent filter performance as separate defects. Quarantine affected stock and retain batch details and test results. Do not treat a supplier’s claim of safe occupied-room use as acceptance evidence: assess the actual assembly and intended installation before buying for that use.

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.