Premium Ripe Pu Erh Tea: Lab Test Reports
At Tea Ducks, we believe trust should be as layered as flavour. This page publishes the laboratory test reports for our Premium Ripe Pu Erh Tea, so you can review what was tested and what was found for each batch.
Each batch listed here is commissioned by Tea Ducks and independently tested by Eurofins, including a screen for 600+ pesticide residues (and, where applicable, heavy metals). Results are batch-specific and reflect the laboratory’s methods and reporting limits; where relevant, reported values can be compared with UK/EU Maximum Residue Limits (MRLs).
Premium Ripe Pu Erh Tea: Latest batch record
If you have a Tea Ducks pack to hand, you can match the batch code on the label to below. If you’re browsing, this section shows our most recent batch record and links you into the full batch history for reference.
Current batch | Review date | Tested by | Test scope |
|---|---|---|---|
TD–PL–01 | 05 December 2025 | Eurofins (commissioned by Tea Ducks) | 600+ pesticide residues (screening panel); heavy metals (where applicable) |
Premium Ripe Pu Erh Tea: Certificates of Analysis (COA)
The COA images below are published by batch for Premium Ripe Pu Erh Tea and show the laboratory’s reported results and reporting limits. Each report is batch-specific and reflects the laboratory’s methods for that test and panel. If you have any questions about what you see in the images, please get in touch — we’ll be pleased to help clarify the relevant lines and fields.
Guidance on reading the Certificate of Analysis (COA)
The COA shown on this page is batch-specific and applies to the same batch used for both Premium Ripe Pu Erh Tea and Premium Ripe Pu Erh Tea Cake. If you’d like to view the tea alongside its testing record, you can visit the product pages here: Premium Ripe Pu Erh Tea and Premium Ripe Pu Erh Tea Cake. The notes below explain the key terms you’ll see in the report images.
What does “ND” mean?
Not Detected (ND) means the substance was not detected above the laboratory’s stated LOQ for that test and panel.What are LOQ / LOD?
LOQ and LOD are the laboratory’s quantification and detection limits for the method used.What do the units mean (e.g., mg/kg)?
Units such as mg/kg show the concentration reported in the sample.
Premium Ripe Pu Erh Tea: Scope and limitations
We publish these Certificates of Analysis (COA) as part of our commitment to batch-level transparency. For accurate interpretation, please read each report within the scope of the laboratory’s stated panel, methods, and reporting limits.
Batch-specific: Each COA applies only to the batch code shown on this page.
Panel-based scope: The “600+ pesticide residues” refers to the laboratory’s screening panel commissioned for that batch (the exact scope is shown on the COA).
Methods and LOQ: Reported results reflect the laboratory’s test method and Limit of Quantification (LOQ) for that screen; “Not Detected” should be read in relation to the stated LOQ.
Regulatory context: Where applicable, reported values can be compared with UK/EU Maximum Residue Limits (MRLs) for context.
Support and next steps
If you have any questions about a batch code, a specific line on the COA, or any term shown on this page, please contact us — our sourcing team will be pleased to help clarify the report and confirm the relevant batch record. You can also return to Quality & Safety for a clear overview of how we approach sourcing and testing for every tea we share.
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Published by Tea Ducks Ltd · Page last updated: 08 February 2026