Sourcing Rhizobium inoculants from China

Zero duty on the relevant culture line

Heading 3002 includes cultures of micro-organisms excluding yeasts. The relevant starting point for non-pathogenic Rhizobium cultures is 3002 49 00 20, covering other cultures of micro-organisms. The table shows different presentations under this same line, subject to confirmation for the actual formulation. A carrier-based finished inoculant needs classification using its full composition and intended use.

Read from the UK Trade Tariff on 5 October 2026, this line carries 0% duty for goods from China, with no recorded anti-dumping or countervailing measure or suspension. The tariff attaches Veterinary control and Animal Health Certificate controls. Their application to a particular Rhizobium inoculant has not been established here: the importer should confirm the requirements for goods from China with their customs broker and APHA before dispatch.

Give your broker the organism identity, carrier ingredients, manufacturing description and proposed label to confirm the commodity code. If animal-product rules apply and the shipment is medium or high risk, official guidance requires a health certificate. For the wider heading, see Bacillus fermentation cultures.

Specify the strain, host crop and carrier

Specify the Rhizobium species and strain identifier, target legume, seed or root application, formulation and complete carrier composition. Agree viable-count acceptance criteria at delivery and expiry, the test method, contamination checks, storage conditions and remaining shelf life. Ask for crop-specific nodulation evidence and compatibility evidence for the seed treatments you plan to use.

Plant protection regulation depends on the claims made and the product's effects. If the inoculant is a pesticide, approval is required before use, sale, supply, advertising or storage. Review proposed claims with HSE before printing labels. For England and Wales, importing soil from China requires authorisation; ask APHA to assess any soil-containing carrier before ordering.

Worked duty example

Illustrative example, not a quote: Illustrative trial order: 500 kg of Rhizobium liquid culture under 3002 49 00 20, invoiced at £4,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £5,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £5,500, so it is £1,100. 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

Identity: match strain identifiers, batch references and the target crop against the order, labels and analysis certificate.

Viability: have arrival samples tested using the agreed method; compare viable counts and contamination results with the contractual acceptance criteria.

Storage: review transit records against the supplier's stability evidence and agreed storage conditions; check expiry and remaining shelf life.

Carrier and packs: match ingredients to the approved specification; check seals, leakage, moisture ingress and readable application instructions.

What goes wrong

A culture can pass a visual check while failing the agreed viable count. Other failure points include the wrong strain for the target legume, contaminated carrier, short remaining shelf life and unsupported compatibility with treated seed. Hold affected batches while identity and viability results are reviewed.

A supplier may replace the agreed carrier or add disease-control claims to a nutrition-focused product. Recheck the formulation, classification and regulatory route whenever either changes. Arrange testing and certification support around the actual strain, carrier and intended use.

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.