White Peony Tea: Lab Test Reports
We publish testing information in plain sight, because customers shouldn’t need to take our word for it. This page provides the laboratory test reports for our White Peony Tea, with batch history so you can trace what you’re buying.
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). Reports 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).
White Peony Tea: Latest batch record
If you already have this tea, please match the batch code on your pack to below for that specific batch. If you’re simply browsing, you’ll find our latest batch record here, followed by the batch history for context and transparency.
Current batch | Review date | Tested by | Test scope |
|---|---|---|---|
TD–WP–01 | 05 December 2025 | Eurofins (commissioned by Tea Ducks) | 600+ pesticide residues (screening panel); heavy metals (where applicable) |
White Peony Tea: Certificates of Analysis (COA)
The COA images below are published by batch for White Peony 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’d like any help understanding the images, please reach out — we’ll be happy to walk you through the relevant entries.
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 White Peony Tea and White Peony Tea Cake. If you’d like to view the tea alongside its testing record, you can visit the product pages here: White Peony Tea and White Peony 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.
White Peony 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