Sending a Sample From the UK to an EU Lab: The Export Paperwork

What customs paperwork does a UK buyer need to send a small analytical sample to a laboratory in the EU, how should the sample be described and valued, and when does the EU 'samples of negligible value' relief apply?

A sample sent from Great Britain to a laboratory in the EU is goods leaving the UK and goods entering the EU. It needs a customs declaration at both ends, a commercial document that describes it truthfully, and, usually, an EORI number on the UK side. Small size and a purpose of analysis do not remove any of that ^[1].

The EU relief most often quoted for samples, Article 86, does not fit an analytical sample. It covers samples of negligible value that can only be used to solicit orders. The provisions for goods imported for examination, analysis or tests, Articles 95 to 101 of the same regulation, are the ones to ask the receiving laboratory or its broker about ^[2].

Why a sample is still an export

GOV.UK's step-by-step guidance on exporting goods includes an export declaration among its steps, and the exporter decides who makes the declaration and moves the goods ^[1]. Nothing in that structure turns on the commercial purpose of the shipment.

The page is explicit about its own scope. It covers permanent moves from England, Wales and Scotland to a country outside the UK. Post, temporary exports and moves involving Northern Ireland follow different guidance, and the page carries no value thresholds for when a declaration is not needed ^[1]. A sample that goes by post to an EU laboratory is therefore governed by the postal route's rules as well, and those need to be read from the carrier's live page, not recalled.

The same page lists the steps in order: check the destination's rules, get any licences or certificates, get an EORI number, decide who declares, confirm the buyer can import the goods, classify the goods with a commodity code, prepare the invoice, make the declaration, and keep the records ^[1]. A sample follows the same order.

Which form: postal label, courier data or both

The route decides the form. A postal parcel travels with a customs label that carries the declaration on the outside, and the postal operator sets the thresholds for when a short form is enough and when a fuller one is required. Those thresholds change and sit on the operator's page, which is why this article does not quote them. A courier collects the same information electronically, in advance, and attaches it to the shipment.

In both cases the information is the same: sender, recipient, description, quantity, weight, value, country of origin and a commodity code. Treat the form as a summary of the invoice, not a separate document. If the two disagree, the invoice is the one an officer reads against the goods.

The pro forma invoice

If there is no sale, there is no selling price, but there is still an invoice. GOV.UK says to use the selling price on the invoice or, if you are not selling the goods, the market value ^[1]. A pro forma invoice is the document that carries those facts when no sale has taken place.

The commodity code deserves the same care as on an import. A companion article on classification explains why the code is derived from what the goods are and not what they are for. The same logic applies when you are the exporter.

Why "no commercial value" is the wrong phrase

You will see the phrase in laboratory submission guides. One analytical laboratory's customs guidance from December 2020 told senders to describe the contents as a research sample for testing and to declare the financial value as "No commercial value", because the contents are destroyed in processing ^[3]. A trade FAQ in the opposite direction recommends entering the lowest value a form allows ^[4].

Both are instructions from a receiving laboratory about its own import, written for a particular type of material. They are not a statement of what the law lets any sender declare. A sample that is consumed in testing may still have a replacement cost, and a declared value that bears no relation to it is the sort of inconsistency an officer checks. Material that is expensive to produce makes the gap more conspicuous.

The safer wording states the facts: what the material is, that it is a sample for laboratory analysis, that it will be consumed or destroyed in testing, that it is not for resale, and its real value. If the receiving laboratory gives a required form of words, ask whether it also accepts a true value alongside it. Where the two conflict, resolve it before dispatch, not at the border.

EORI numbers at both ends

GOV.UK says exports from England, Wales or Scotland need an EORI number starting with GB, and that goods moving to or from Northern Ireland may need one starting with XI ^[1]. If you are a private individual with no EORI, the carrier or broker will explain what it can declare on your behalf and what it needs from you.

The receiving end has its own requirements. An EU laboratory importing the sample will be the importer of record and will usually need its own EORI and a customs route for receiving small consignments. Ask what it needs on the paperwork before you ship. The Sciantec guidance, written for UK imports, put the receiving laboratory's EORI number on the outside of the packaging as its first item ^[3]. The EU equivalent should be asked for in the same way.

Article 86 and the analysis relief

Article 86 of Regulation 1186/2009 admits free of import duties samples of goods that are of negligible value and can be used only to solicit orders. The article's third paragraph adds that a sample qualifies only if its presentation and quantity rule out any use other than seeking orders ^[2]. It sets no numerical value limit. An analytical sample sent for testing is not sent to solicit orders, so this relief is the wrong one to cite.

The regulation has a separate relief for goods imported for examination, analysis or tests. Under Article 95, goods that are to undergo examination, analysis or tests for information or for industrial or commercial research are admitted free of duty. The conditions that follow are real limits ^[2]:

• Article 96: the relief applies where the goods are used up or destroyed in the testing, unless a later article applies.
• Article 97: goods that are themselves a sales-promotion operation get no relief.
• Article 98: only the quantity strictly necessary for the purpose is covered, as determined by the competent authorities.
• Article 99 and Article 100: material left at the end of testing is either destroyed or made commercially valueless, handed to the State, or in justified cases exported; otherwise duties apply to the remainder.
• Article 101: the competent authorities set the testing period and the formalities.

Two cautions follow. The regulation text cited here is the EU instrument as published on EUR-Lex, and its application to a consignment from Great Britain is a matter for the customs authority of the receiving member state, so the receiving laboratory or its broker should confirm it. And the relief concerns import duties. Whether VAT is charged on arrival is a separate question to put to the same people.

Rules that sit on top of customs

Customs clearance is one of several layers. GOV.UK lists chemicals and medicines among the goods to which special rules apply, and tells the exporter to get any licences or certificates first ^[1]. Transport rules for dangerous goods and for biological material apply to the packaging and the carrier irrespective of the customs paperwork.

For a typical lyophilised research sample, the question to settle before booking is simply whether the carrier will accept it and under what conditions. Ask in writing, and keep the answer with the shipment record.

Timing and temperature-sensitive samples

Customs clearance adds days, and the number is not predictable. The Sciantec guidance notes that information missing from the packaging and paperwork can mean samples are held in customs ^[3]. A held parcel is a parcel not moving, and the time a sample can tolerate in transit is a property of the sample, not of the carrier.

Plan the dispatch day around that. Avoid shipping late in the week where a weekend would follow clearance, tell the receiving laboratory the tracking number on the day, and agree in advance who will be contacted if the parcel is held. Record the despatch time and the arrival time; the custody record is the place for both, as described in the handbook guide on chain-of-custody records for analytical samples.

What to do next

Before the sample leaves, send the laboratory a short list of questions: its EORI, its required description wording, whether it accepts a true value, which relief it will rely on, and whether it wants the invoice inside the parcel, outside it or both. Read the current thresholds and forms on the page of the carrier you are using, and keep the invoice, the declaration reference and the tracking record together.

This article was checked against the GOV.UK export page and the EUR-Lex text of Regulation 1186/2009 on 10 October 2026. Both can change, so read them again before you ship.