by Wega- Tea import
Tea is a natural product, and its quality can vary depending on the location of cultivation, weather conditions, harvest date, and leaf processing method. However, for teas imported from outside the European Union, assessing appearance, aroma, and flavor is only one element of the inspection process. Equally important is verifying whether the product meets food safety requirements. For importers, this means combining tea quality assessment with safety and documentation checks. Pesticide residue testing, accurate representative sampling, and proper interpretation of the results are particularly important.
Pesticide residues – one of the key parameters
Tea cultivation, like other plants, may involve the use of plant protection products. Therefore, one of the key elements of tea control is testing for pesticide residues. In the European Union, maximum residue levels (MRLs) are primarily defined by Regulation (EC) No. 396/2005. These limits apply to specific substances and products, and their values may change as regulations change.
Therefore, when evaluating a laboratory report, it's not enough to simply state "pesticide detected." You need to check:
- what substance was marked,
- in what concentration it occurs,
- what MRL applies to a given product,
- what is the limit of quantification of the method used,
- what range of substances was covered by the test,
- how to interpret the result taking into account the measurement uncertainty.
This is particularly important for results that are close to the applicable limit.
Result above MRL – why is it important to understand measurement uncertainty?
A laboratory test result is not completely uncertainty-free. Current EU guidelines for pesticide residue analysis stipulate that measurement uncertainty should be taken into account when assessing sample compliance. The EU analytical guidelines assume an expanded uncertainty of 50% for the result as the default value, under specific laboratory-specific conditions. When assessing MRL exceedance, a rule is applied according to which a sample is considered non-compliant if the result, reduced by the expanded uncertainty, still exceeds the MRL. This is an important distinction. Simply because a numerical result exceeds the MRL does not necessarily mean that the sample is formally non-compliant. At the same time, measurement uncertainty should not be considered a way to "increase" the permissible limit. The MRL remains a value defined in regulations – uncertainty is a component of the laboratory and official interpretation of the result.
Not every study covers the same thing
A report described as a "pesticide residue test" may appear comprehensive, but the scope of testing performed by individual laboratories may vary. The European Commission notes that samples may be analyzed according to different analytical ranges, which may not necessarily cover all pesticides. Therefore, importers should pay attention not only to the final "pass" or "compliant" information but also to the list of tested substances, the methods used, and their parameters. This is particularly important for tests submitted by a manufacturer from a non-EU country. A product intended for the European market must be assessed according to the requirements applicable in the European Union, not solely according to the standards of the country of origin.
The sample must represent the batch being tested
Even the best laboratory will not provide a reliable result if it receives a sample that does not adequately represent the entire batch of product. A batch of tea can weigh hundreds or thousands of kilograms, yet a small fraction reaches the laboratory. Therefore, the sampling method is crucial. Since 2026, the rules for official sampling and analysis for pesticide residue control have been specified in Commission Implementing Regulation (EU) 2026/765. This regulation stipulates, among other things, the separate treatment of individual batches and the handling of samples so as not to affect the residue levels determined and to preserve their representativeness. For tea, the table on laboratory samples indicates a minimum sample size of 0.1 kg in the relevant product category. In practice, the operator's own control procedure may differ from that of an official control, but the principle remains the same: a laboratory result is only meaningful if it is known which batch the sample comes from and whether it truly represents it.
A commercial sample and a research sample are not always the same thing.
Before placing an order, the importer can receive a sample from the manufacturer, primarily for sensory evaluation. This allows them to check the leaf's appearance, the infusion's color, the aroma, and the taste, and determine whether the tea meets expectations. However, this is a different goal than laboratory safety testing of a specific batch. Therefore, traceability is crucial: the importer should know which batch the laboratory report refers to, when the test was performed, and whether the result applies to the product that will actually be shipped. A report from a previous production or a different batch may provide information about the manufacturer's standards, but it does not automatically answer questions about the parameters of the current shipment.
The manufacturer's certificate does not release the importer from liability
The manufacturer may provide a Certificate of Analysis, a laboratory report, or other documents confirming product parameters. These are an important element of delivery verification, but they do not transfer full responsibility for product safety to the foreign supplier. According to general principles of food law, food business operators are obligated to ensure that food under their control meets the relevant requirements and to verify compliance. Regulations also mandate product traceability. If a business has reason to believe that the food they import or distribute does not meet safety requirements, EU regulations stipulate obligations related to, among other things, product withdrawal and notification of the relevant authorities. Therefore, verifying documents and test results should not be treated as a mere formality.
What else might need checking?
Pesticide residues are just one potential chemical hazard. Depending on the product type, its origin, the supplier's history, the results of previous inspections, and current legal requirements, it may be necessary to consider other parameters as well. The scope of inspections should be based on a risk assessment, not on a single, universal set of tests performed regardless of the product and its origin. EU regulations provide for separate sampling and analysis rules, including for different groups of food contaminants, so it's worth checking the current requirements for the specific product and country of origin before each delivery.
Safety and quality are two different questions
Tea can have an excellent aroma and flavor yet fail to meet certain safety requirements. The opposite can also occur: the product complies with food law requirements, but its sensory quality does not match the approved sample.
Therefore, professional evaluation of tea before sale should cover two complementary areas:
- product safety – compliance with food law requirements and the results of relevant tests,
and
- product quality – leaf appearance, aroma, taste, color of the infusion and compliance with the established commercial standard.
Only the combination of both these elements allows for a proper assessment of the delivery.
Inspection begins before the container arrives
Tea testing shouldn't be the final stage of import. It's much safer to build a control system encompassing the entire process: from selecting a producer and evaluating samples, through establishing the required parameters and documents, to verifying a specific batch. While trusting a supplier is important in food imports, it doesn't replace verification. An importer who understands the requirements of the European market, can read laboratory reports, ensures that documents are linked to a specific batch, and responds to questionable results can mitigate risk before the product is released for sale. And that's precisely what responsible importing is all about: not only finding good tea, but also ensuring that the tea reaching customers meets food safety requirements.
This article is for informational purposes only. Legal requirements, MRLs, and control principles are subject to change, so when assessing a specific batch, current regulations and appropriate databases should always be consulted.
