Sourcing lactometers from China

Zero duty on lactometers

Read from the UK Trade Tariff on 30 September 2026, heading 9025 covers hydrometers and similar floating instruments, including floating lactometers used to measure milk density. The selected lines carry 0% duty on goods from China, with no anti-dumping or countervailing duty and no listed suspension. The table also includes related parts and separately supplied milk thermometers.

The tariff attaches mercury import and export controls to the non-electronic instrument and liquid-filled thermometer lines. Official guidance prohibits importing mercury-containing measuring devices from China into Great Britain or supplying them unless an exemption applies. Specify mercury-free construction, including any integral thermometer, and ask your customs broker to confirm the declaration evidence for the exact product.

An ordinary non-electronic floating lactometer is a candidate for 9025 80 80 90. Confirm the commodity code from its construction and the contents of any kit. Our brewing hydrometer guide covers related instruments within the wider heading.

Specify the milk density scale and temperature

Specify whether the scale reports density, relative density or a named lactometer scale. Agree the range, graduation spacing, reference temperature, permitted error and whether readings use the top or bottom of the meniscus. Request the temperature correction instructions and calibration results for samples of the exact model.

Agree the glass dimensions, ballast material, sealed construction, protective case and clearance in the intended sample cylinder. Food-contact rules cover articles intended to contact food, so ask for material details and supporting test evidence for the surfaces that touch milk. Match the evidence to the supplied construction and intended cleaning conditions.

Worked duty example

Illustrative example, not a quote: 900 individually cased glass lactometers, illustrative only under 9025 80 80 90, invoiced at £10,000 free on board, with £900 of freight and insurance to the UK. The customs value is £10,900. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £10,900, so it is £2,180. 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

Scale: compare markings, units, reference temperature and reading instructions with the approved sample; check that the internal scale has not slipped.

Accuracy: compare sampled instruments with a calibrated reference across the agreed range at controlled temperature, recording the liquid used and the meniscus reading method.

Glass and ballast: check for cracks, chips, loose ballast and leakage; confirm that the instrument floats upright without touching the cylinder.

Packing and records: inspect individual protection, case fit and carton cushioning on arrival; match model and batch identifiers to calibration and material records. Arrange quality inspection before shipment.

What goes wrong

A correctly printed scale can still give misleading results if its reference temperature or reading convention differs from the buyer's method. Milk foam, bubbles adhering to the glass and contact with the cylinder wall can also disturb readings. Agree a written method before approving samples.

Slipped paper scales, loose ballast and damaged glass undermine repeatability. Inspect unpacked samples before using them in milk and isolate damaged stock. A density reading alone does not establish milk purity or fat content, so avoid buying on an unsupported claim that the instrument proves either.

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.