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Articles on verification, quality, compliance, pricing, sourcing, formulation, and top botanicals.

Buyer Risk & Protection

Compliance & Regulation

Lab Testing & Quality

Lab Testing & Quality: Complete Guide

Updated 9/27/2025

Authoritative hub for lab testing & quality — curated guides, checklists, and definitions.

Differences between U.S., EU, and China testing standards.

Updated 9/26/2025

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).

Updated 9/26/2025

Heavy metals: safe limits and testing methods (ICP-MS). — practical definitions, checklists, and what to ask suppliers.

Microbial testing: how to read results.

Updated 9/26/2025

Microbial testing: how to read results. — practical definitions, checklists, and what to ask suppliers.

Residual solvents and pesticides—when are they required?

Updated 9/26/2025

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?

Updated 9/26/2025

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?

Updated 9/26/2025

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?

Updated 9/26/2025

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).

Updated 9/26/2025

Why potency and identity testing matters (HPLC, FTIR). — practical definitions, checklists, and what to ask suppliers.

Performance & Formulation

Pricing & Payment

Sourcing & Supply Chain

Verification & Trust