Sourcing multi-element ICP standards from China

Zero duty and composition checks

Read from the UK Trade Tariff on 30 October 2026, heading 3822 covers prepared diagnostic or laboratory reagents and certified reference materials. All supplied lines carry 0% duty for goods from China, with no anti-dumping or countervailing measures and no suspensions listed. The table shows product variants using the same certified reference material line, rather than separate tariff subdivisions.

The supplied entry for 3822 90 00 00 attaches veterinary control and an ozone-related restriction on entry into free circulation. Ask the supplier for the complete composition and any animal-derived ingredients. The importer should confirm the veterinary requirement with their customs broker. Importing regulated ozone-depleting substances into Great Britain requires a licence; check any such ingredient before shipment.

Confirm the commodity code using the formulation, intended use and evidence supporting any certified reference material claim. Do not classify solely from the words calibration solution. See the diagnostic and lab reagents guide for the wider heading.

Specify the elements, acid matrix and certificate

List every element, its concentration and reporting unit, the acid type and concentration, bottle material, fill volume and intended analytical method. Agree whether the solution is supplied ready to use or needs dilution. Ask the manufacturer to explain how the selected elements remain compatible in the stated matrix.

For certified material, request a sample certificate before ordering. Specify batch-specific assigned values, measurement uncertainty, metrological traceability, expiry, storage conditions and instructions after opening. Agree an acceptance check against an independently sourced standard using your laboratory method.

Before placing imported mixtures on the Great Britain market, importers must classify, label and package them under the chemical classification rules. Hazardous chemicals supplied for use at work need a safety data sheet. Review UK REACH responsibilities for the constituent substances, including the annual quantities imported.

Worked duty example

Illustrative example, not a quote: Illustrative order: 500 bottles of certified multi-element calibration solution under 3822 90 00 00, invoiced at £5,000 free on board, with £300 of freight and insurance to the UK. The customs value is £5,300. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £5,300, so it is £1,060. 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: match the element list, concentration units, acid matrix and product identifier to the purchase specification.

Certificate: match the bottle batch to its certificate; check assigned values, uncertainty, traceability, expiry and storage instructions.

Bottles: check seals, closures, leakage, visible particles and evidence of crystallisation; compare fill volume with the agreed specification.

Acceptance: test retained samples against the agreed independent standard before releasing the batch for routine calibration. Use the inspection guide to organise the checks.

What goes wrong

A matching element list can conceal a different acid matrix or concentration unit. This changes dilution calculations and can make the solution unsuitable for the laboratory method. Precipitation, contamination and leakage can also undermine the assigned concentrations.

Generic certificates and mismatched batch numbers leave the buyer unable to connect the supplied bottles to the reported results. Settle certificate content and acceptance criteria before ordering, then hold suspect bottles separately while investigating discrepancies.

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.