Sourcing laboratory glass condensers from China
Laboratory glass condensers from China carry 0% UK duty across the glass categories in heading 7017. Supply for workplace use requires safe-use information and necessary testing or examination. Specify glass composition, joint fit and intended operating conditions. Cambridge China Bridge sources laboratory glass condensers.
Duty by glass composition
Heading 7017 covers laboratory, hygienic or pharmaceutical glassware, whether or not graduated or calibrated. For laboratory condensers, the tariff distinction is glass composition rather than the cooling-tube shape. The table repeats the low-expansion glass code for straight and coiled designs; these are product variants within the same tariff line.
Read from the UK Trade Tariff on 25 October 2026, all supplied lines carry 0% duty for goods from China. The supplied records list no anti-dumping or countervailing duties, suspensions or attached import controls. Low-expansion classification depends on the material meeting the tariff description, rather than simply being advertised as borosilicate.
Ask for the glass composition and expansion data before confirming the commodity code. See the wider laboratory glassware guide for the broader product family.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Laboratory condensers of fused quartz or fused silica | 7017 10 00 00 | 0% | None |
| Straight laboratory condensers of qualifying low-expansion glass | 7017 20 00 00 | 0% | None |
| Laboratory condensers of other glass | 7017 90 00 00 | 0% | None |
Specify the condenser and its connections
Specify straight, bulb or coiled construction, effective cooling length, overall dimensions, ground-joint size and taper, socket and cone positions, hose connection dimensions and intended orientation. Provide a drawing and a mating sample where fit matters. Ask for glass composition, annealing records and evidence supporting the proposed temperature, coolant-pressure and vacuum conditions.
HSE guidance requires safe-use information and testing or examination necessary to ensure compliance for workplace articles. Request instructions covering clamping, hose attachment, coolant flow, cleaning and operating limitations. Agree sample checks under the intended conditions before approving production; a photograph cannot establish joint fit or jacket integrity.
Worked duty example
Illustrative example, not a quote: Illustrative stock order of straight laboratory condensers of qualifying low-expansion glass under 7017 20 00 00, invoiced at £2,400 free on board, with £2,400 of freight and insurance to the UK. The customs value is £4,800. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £4,800, so it is £960. 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 and finish: check material records against the order, inspect for cracks, chips, inclusions and rough hose connections, and examine fused connections for visible defects.
Dimensions and fit: measure cooling length and connection dimensions against the drawing; assemble sampled joints with the buyer's mating glassware without forcing them.
Cooling jacket: check water passage and leakage using an agreed procedure within the supplier's stated limits; inspect for leakage between the jacket and vapour path.
Arrival and packing: check individual separation, cushioning around hose connections and joints, carton movement and concealed breakage. Record defects by batch during quality inspection.
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What goes wrong
Ground joints can look correct yet seat poorly on existing apparatus. Uneven fused connections, cracked hose connections and leaking jackets cause rejection even when overall dimensions match. A substituted glass composition can also leave the buyer without evidence for the intended operating conditions.
Packing that supports the main tube but leaves projecting connections exposed can deliver apparently intact cartons containing broken condensers. Approve packing with the actual product, compare production samples with the approved drawing and sample, and separate damaged pieces on arrival.
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 laboratory glass condensers from China?
The supplied tariff records show 0% across heading 7017 glass categories, with no anti-dumping or countervailing duties listed. Classification depends on glass composition.
Does borosilicate automatically qualify for the low-expansion glass code?
Do not classify by the name alone. Obtain expansion data and compare it with the tariff description before selecting 7017 20 00 00.
How do I check whether condenser joints fit my apparatus?
Specify joint size and taper on the drawing, then assemble sampled condensers with your actual mating glassware. Check seating and alignment without forcing the joints.
What should I ask for before ordering condensers for vacuum use?
Ask for stated vacuum and temperature limitations, supporting test evidence, safe-use instructions and an agreed sample test for your intended setup.