This page is the hub for lab testing & quality. Start here, then dive into the focused guides below.
Recommended reading
- Differences between U.S., EU, and China testing standards.
Differences between U.S., EU, and China testing standards. — practical definitions, checklists, and what to ask suppliers. - Heavy metals: safe limits and testing methods (ICP-MS).
Heavy metals: safe limits and testing methods (ICP-MS). — practical definitions, checklists, and what to ask suppliers. - Microbial testing: how to read results.
Microbial testing: how to read results. — practical definitions, checklists, and what to ask suppliers. - Residual solvents and pesticides—when are they required?
Residual solvents and pesticides—when are they required? — practical definitions, checklists, and what to ask suppliers. - What’s the difference between in-house vs 3rd-party testing?
What’s the difference between in-house vs 3rd-party testing? — practical definitions, checklists, and what to ask suppliers. - What’s the shelf-life of a COA?
What’s the shelf-life of a COA? — practical definitions, checklists, and what to ask suppliers. - Which lab tests are required for each ingredient type?
Which lab tests are required for each ingredient type? — practical definitions, checklists, and what to ask suppliers. - Why potency and identity testing matters (HPLC, FTIR).
Why potency and identity testing matters (HPLC, FTIR). — practical definitions, checklists, and what to ask suppliers.
What this hub covers
- Key definitions and why they matter
- Practical checklists and “what good looks like”
- Common pitfalls and how to avoid them
- Links to in-depth, related guides
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