Sourcing lab mortars and pestles from China

Duty on laboratory ceramic mortars and pestles

Read from the UK Trade Tariff on 25 October 2026, heading 6909 covers laboratory, chemical and technical ceramics, alongside agricultural and packing receptacles. This guide concerns laboratory mortars and pestles. Porcelain falls under 6909 11 00 00; the hardness-based line is 6909 12 00 00; other laboratory ceramics may fall under 6909 19 00 90.

The relevant lines carry 4% duty for goods from China, with no anti-dumping or countervailing measures listed. The listed suspensions concern specified alumina balls or ceramic-carbon cartridges, rather than mortars and pestles. The tariff attaches an import waste control. For a shipment from China, ask your customs broker to confirm its applicability and documentation. Where notification controls apply, the exporter must seek consent from the dispatch country's competent authority.

The extract also lists export waste controls and a cultural-object export licence measure. Confirm the commodity code using the material, hardness evidence and intended laboratory use. The table separates porcelain mortars and pestles within the same code. See the wider technical and laboratory ceramics guide for other products in this heading.

Specify the grinding pair and sample compatibility

Specify the ceramic composition, mortar capacity, internal bowl profile, pestle head shape, handle dimensions and tolerances. Identify which surfaces are glazed and which remain unglazed. Agree the grinding texture against an approved sample, rather than accepting a photograph as the specification.

Tell the factory which samples, cleaning agents and drying conditions the pair will encounter. Ask for batch material results and trial samples for abrasion, sample contamination and cleaning. Suppliers must supply safe work equipment. HSE guidance includes providing safe-use instructions and the testing or examination necessary for compliance.

Worked duty example

Illustrative example, not a quote: Illustrative batch of matched porcelain laboratory mortar and pestle sets under 6909 11 00 00, invoiced at £16,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £17,500. Duty at 4% is £700. Import VAT at 20% is charged on the customs value plus duty, £18,200, so it is £3,640. Import taxes total £4,340; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £700 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Body and finish: inspect the bowl, rim and pestle head for cracks, chips, glaze defects and loose ceramic particles.

Pairing: compare dimensions with the drawing and check that the pestle contacts the intended grinding area without awkward rim interference.

Grinding and cleaning: trial representative material, inspect for ceramic shedding and check whether residue remains after the agreed cleaning process.

Packing and identification: check that the pestle cannot strike the mortar in transit, and match carton contents and batch identification to the order.

What goes wrong

A substituted ceramic body can change wear and chemical resistance. A smooth grinding surface may perform poorly, while a friable surface can shed material into the sample. Poorly matched bowl and pestle profiles make grinding awkward; cracks and chipped rims can appear after transport.

Approve a matched pair, retain it for comparison and repeat the agreed grinding and cleaning checks on incoming batches. Record defects before releasing stock. Use the quality inspection guide to prepare the inspection brief.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For own-brand ranges, see sourcing for brands.