Sourcing acetic starter cultures from China

Duty and formulation-dependent controls

Heading 3002 includes cultures of micro-organisms excluding yeasts. For non-pathogenic acetic acid bacteria starter cultures, the relevant line to check is 3002 49 00 20. The table shows purchasing formats within that same line, rather than separate tariff classifications. Confirm preparations containing other ingredients against their full composition.

Read from the UK Trade Tariff on 5 October 2026, the supplied heading lines all carry 0% duty for goods from China. The relevant culture line has no listed anti-dumping or countervailing duty and no suspension.

The UK Trade Tariff attaches Veterinary control and Animal Health Certificate controls to this culture line. Their requirements for an exact Chinese starter formulation have not been established here; confirm applicability and clearance documents with your customs broker before dispatch. Provide the strain, intended use, carrier and animal-derived ingredients when checking the commodity code.

Specify the strain and vinegar process

Specify the bacterial species and strain identity, liquid or dried format, carrier ingredients and intended vinegar process. Request batch evidence for identity, viable activity, purity and storage stability. Agree an activation method and acceptance trial using your own feedstock, aeration and fermentation conditions.

Food-use cultures must comply with food safety law. Check whether the proposed culture and intended use fall within the novel food regime; a product that qualifies as a novel food needs authorisation before sale in Great Britain. Identify animal-derived ingredients before selecting an import route. Where no suitable general licence or authorisation exists for an animal-derived product, contact APHA's imports team.

For the wider heading context, see lactic acid bacterial starter cultures. Keep the specification specific to acetic acid bacteria rather than accepting a generic fermentation starter description.

Worked duty example

Illustrative example, not a quote: Illustrative small trial consignment of sealed starter culture sachets under 3002 49 00 20, invoiced at £1,500 free on board, with £500 of freight and insurance to the UK. The customs value is £2,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £2,000, so it is £400. 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

Identity: match strain identifiers and batch references on the packs, certificate of analysis and purchase specification.

Activity: test retained arrival samples using the agreed activation and vinegar fermentation method; compare acid development and unwanted growth with the approved sample.

Storage: review transport records against the supplier's stated storage conditions and stability evidence before releasing stock.

Packing: check seals, leakage, moisture damage and the stated carrier ingredients; compare expiry and storage instructions with the batch documents.

What goes wrong

A starter may arrive intact but show weak activity after transport or storage. A batch that performs in the supplier's test medium may perform differently in your feedstock. Compare an arrival sample with the approved sample under the same conditions before using it in production.

Incomplete strain descriptions, substituted carriers and undisclosed animal-derived ingredients leave buyers unable to assess the formulation or settle clearance documents. Agree a complete ingredient declaration and a change-approval process before ordering, and hold any batch whose identity, activity or documents do not match.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.