COA, SDS, TDS, COC: Which Documents to Request From Your Oral Care Supplier
Why the document pack decides who you can sell to
Most sourcing failures are paperwork failures — discovered late, when a distributor asks for your technical file, when a listing needs supporting documentation, or when your compliance adviser asks what the formula actually contains.
For importers, brand owners, Amazon and FBA sellers and distributors, the document pack is a qualification asset. It is what your downstream customer checks before listing your SKU. Request it during sampling, not after the deposit.
The four documents and what each one proves
Buyers use these terms interchangeably. They are different files, issued by different parties, answering different questions.
| Document | What it is | Who issues it | The question it answers |
|---|---|---|---|
| COA — Certificate of Analysis | Batch-specific test results against agreed specifications | Supplier’s QC lab (or third party) | Does this shipment meet spec? |
| TDS — Technical Data Sheet | Fixed product profile: format, key ingredients, appearance, packing, storage | Supplier / formulator | What is this product, as designed? |
| SDS — Safety Data Sheet | Hazard, handling, transport and first-aid information | The legal manufacturer / formulator | How must this be handled and shipped? |
| COC — Certificate of Conformity | Declaration that a batch conforms to a defined standard or spec | Supplier, sometimes with a test report | Can you declare conformity for this batch? |
A TDS describes the product; a COA describes the batch. If a supplier resends the same TDS every order and calls it a COA, you have no batch evidence at all — just a catalogue page.
Read the COA before you read the price
A COA only has value if it is traceable and specific:
- Batch linkage. The batch code must match the tubes, cartons and shipping documents, or your shelf life and batch code assumptions are unverified.
- Specification columns. Useful COAs show specification, result and test method per parameter. A single “pass” line is not a test report.
- Test scope. Confirm which parameters are tested every batch versus per formulation change, then write that into your quality agreement. See our notes on AQL and pre-shipment inspection for how this connects.
When to ask for each document
- RFQ stage: the TDS for every candidate formula, plus the SDS. This tells you early whether the product is even shippable to your market.
- Sample approval: the reference test report behind the sample you approve, cross-checked against your golden sample workflow. Approving without test data is how spec drift starts.
- Before balance payment: the batch COA and, where required, a COC for the production run, reconciled with the inspection report and shipping documents.
Requirements also vary by destination. The export compliance checklist and our CE vs FDA guide cover that difference, while the factory audit checklist shows where documentation quality fits into supplier vetting.
Red flags in a document pack
- Documents branded to a legal entity that differs from your contract or invoice.
- A COA with no batch code, no date and no test method.
- An SDS older than the last material or packaging change.
- No revision history on a TDS — specs that never version are specs nobody maintains.
- Reluctance to name the legal manufacturer issuing the SDS and conformity declarations.
None is automatic rejection, but each needs resolving. Put the deliverable list and revision obligations into your agreement — see our OEM contract notes for where these clauses sit.
FAQ
Can I accept a COA from the supplier’s own lab?
Yes for routine QC, provided it is tied to a specification you signed off. Where your buyer expects independent testing, agree up front who commissions and pays for it, and write it into the PO.
Is a TDS enough for marketplace onboarding?
Rarely. Most buyers ask for a technical profile plus batch-level conformity evidence. Confirm your buyer’s exact list before artwork goes to print.
How often should documents be reissued?
Whenever the formula, material supplier, packaging or legal manufacturer changes — and annually even without a change. Version and date every file.
Do I own the right to use these documents?
You may use them for your own product, but not republish the supplier’s confidential formulation data. Agree permitted use in the supply agreement.
What if a document contradicts what the factory told me verbally?
The document wins. Get the discrepancy corrected in writing with a reissued, dated version before production starts.
Build your document pack before the first PO
Tell us your destination market, product and channel, and we will return the document list we can supply for that SKU — technical profile, batch testing and the declarations your buyer is likely to ask for — before you commit to tooling or volumes.
Explore OEM service for custom formulation and branding, or ready-to-ship stock when speed matters more.
Talk to the sourcing team: email sales@lmsoral.com, or WhatsApp +86 17703320885.
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