Sourcing brewing hydrometers from China

Zero duty on brewing hydrometers

Heading 9025 covers hydrometers and similar floating instruments alongside temperature and humidity instruments. A conventional floating glass brewing hydrometer is covered by the non-electronic instrument line, 9025 80 80 90. The table also identifies accompanying electronic instruments, separate sample thermometers and instrument parts; these are distinct goods, not alternative codes for the same glass hydrometer. For sample temperature measurement, see our platinum resistance temperature probe sourcing guide.

Read from the UK Trade Tariff on 16 October 2026, the selected lines carried 0% duty for goods from China, with no anti-dumping or countervailing duty and no listed suspensions. The non-electronic line carries an import control of mercury. Obtain written confirmation of the ballast composition and ask your customs broker to confirm the applicable declaration requirement. The data also lists mercury export controls against the non-electronic and electronic instrument lines.

Confirm the commodity code from the instrument's operating principle, construction and supplied components. Do not assume a testing cylinder or protective case shares the instrument parts code. See the wider guide to thermometers and hygrometers and the explanation of UK import duty and VAT.

Specify the brewing scale and calibration

Agree whether the buyer needs a specific-gravity scale, a sugar-concentration scale or both. Specify the measuring range, graduation spacing, permitted reading error, calibration temperature and whether to read the top or bottom of the meniscus. Ask for temperature-correction instructions matched to the supplied model.

Specify stem length, bulb diameter, ballast material and the sample cylinder needed for the instrument to float freely. Request evidence supporting contact with wort, beer and the intended cleaning agents. Approve the glass, seals, scale position and protective packaging on a physical sample before production.

For consumer sales, the importer must demonstrate compliance with relevant regulations and safety requirements before placing the product on the market. Packaging and instructions must communicate potential risks and how to reduce them. Address glass breakage and safe handling in the instructions.

Worked duty example

Illustrative example, not a quote: Illustrative order of 20,000 mercury-free glass brewing hydrometers under 9025 80 80 90, invoiced at £24,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £25,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £25,500, so it is £5,100. 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

Readings: compare samples with a calibrated reference in suitable reference liquids across the agreed range, at the stated calibration temperature. Remove attached bubbles and check that the instrument floats without touching the cylinder.

Scale: check graduation clarity, scale alignment, calibration-temperature marking and meniscus instructions against the approved sample. Confirm that the internal scale does not move during handling.

Glass and ballast: inspect the stem, bulb and sealed tip for cracks, chips, loose ballast and leakage. Match the supplier's material statement to the approved construction.

Packing: inspect individual protective sleeves and carton cushioning on arrival. Check English instructions and model identification, and separate damaged instruments before stock is released.

What goes wrong

A shifted paper scale, incorrect ballast or the wrong calibration instructions can make an intact hydrometer give misleading readings. Bubbles, a narrow cylinder and reading the wrong part of the meniscus can also produce apparent faults. Repeat the comparison under the agreed conditions before accepting or rejecting a batch.

Glass stems and tips can break inside apparently undamaged cartons. Check unpacked samples rather than judging protection from the carton alone. Agree replacement handling and inspection criteria before shipment; keep cracked or leaking instruments away from brewing samples.

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.