Sourcing glass Dewar flasks from China
Complete glass vacuum Dewar flasks from China carry 0% UK duty on the supplied tariff line. Workplace articles fall under section 6 of the HSW Act where more specific product safety law does not apply. Specify intended contents and protective construction. Cambridge China Bridge sources glass vacuum Dewar flasks.
UK duty on glass vacuum Dewar flasks
Heading 9617 covers complete vacuum flasks and other vacuum vessels, and parts other than glass inners. This guide concerns complete glass vacuum Dewar flasks for laboratory use. The table shows product variants sharing the supplied commodity code, rather than separate tariff lines. Replacement glass inners are excluded from this heading.
Read from the UK Trade Tariff on 30 September 2026, the supplied line carries 0% duty for goods from China. The supplied facts show no anti-dumping or countervailing duty, no suspension and no attached import controls.
Confirm the commodity code using the construction, intended use and whether the shipment contains complete vessels or replacement inners. For related vessels within the wider heading, see metal cryogenic vacuum Dewars.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Complete cylindrical glass vacuum Dewar flasks | 9617 00 00 00 | 0% | None |
Specify the glass vessel and its protection
State the intended contents and temperature range, working capacity, mouth opening, usable depth and external dimensions. Specify the glass composition, wall construction, silvered or clear finish, protective casing, base support and handle fixing. Agree how the glass is supported within the case and approve a sample with the accessories fitted.
Record whether the vessel is open and vented or designed to contain fluids under pressure. Pressure equipment includes vessels, piping and safety accessories. Ask a compliance adviser to assess the proposed design and intended use before ordering; a vacuum jacket alone does not describe how the contents are held.
Confirm the applicable product safety legislation for placing the vessels on the UK market with HSE or Trading Standards. For workplace articles, section 6 of the HSW Act applies where more specific product safety law does not apply. As buying checks, request instructions covering filling, handling, cleaning, permitted contents and restrictions, with performance evidence for the supplied model.
Worked duty example
Illustrative example, not a quote: Illustrative mixed stock order of complete glass vacuum Dewar flasks for a laboratory supplier under 9617 00 00 00, invoiced at £32,000 free on board, with £2,500 of freight and insurance to the UK. The customs value is £34,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £34,500, so it is £6,900. 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
Glass: inspect the mouth, neck, base and visible walls for chips, cracks and damage; compare dimensions and finish with the approved sample.
Vacuum performance: repeat the agreed retention or evaporation test using the intended contents, controlled conditions and the supplier's handling instructions; record results against the purchase specification.
Protection and accessories: check that the glass sits securely without contact at unintended points, the base is stable, handles are firmly fixed and covers match the agreed design.
Packing and identification: open arrival cartons to check cushioning, separation and concealed breakage; match model labels and instructions to the delivered vessels. Include these checks in the inspection brief.
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What goes wrong
Glass can arrive chipped or cracked beneath an apparently intact case. Poor support lets the vessel move during transport, while loose handles or an unstable base make handling difficult. A damaged vacuum jacket can undermine the performance agreed at sampling. Check the unpacked vessel rather than relying on the condition of the outer carton.
A supplier may substitute a different mouth shape, cover or glass construction while retaining the same catalogue description. Keep the drawing, approved sample, intended contents and test method together. Set aside damaged or mismatched vessels and obtain the supplier's assessment before putting them into service.
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.
Frequently asked questions
What is the UK import duty on glass vacuum Dewar flasks from China?
Complete vessels under 9617 00 00 00 carry 0% duty in the supplied facts read on 30 September 2026. No anti-dumping or countervailing duty is shown.
Are replacement glass Dewar inners covered by the same heading?
Heading 9617 expressly excludes glass inners supplied as parts. Ask your customs broker to classify replacement inners separately from complete vessels.
Do glass vacuum Dewar flasks need CE or UKCA marking?
Ask a compliance adviser to assess the actual design and intended use. Provide details of the contents, closure and pressure rating; the tariff code alone is insufficient for that assessment.
How should I check glass Dewar flasks on arrival?
Inspect unpacked glass for chips and cracks, check its support and accessories, and repeat the agreed performance test under controlled conditions. Set aside damaged vessels.