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Reference standard qualification

In short

Reference standards are the calibration anchor of every assay, identity and impurity test. Primary standards (USP, EP, NIST CRMs) are used to qualify working standards by characterisation (assay, water, residual solvents, related substances) under USP <11>. The working standar...

Reference standards are the calibration anchor of every assay, identity and impurity test. Primary standards (USP, EP, NIST CRMs) are used to qualify working standards by characterisation (assay, water, residual solvents, related substances) under USP <11>. The working standard is re-qualified at defined intervals against a fresh primary. A supplement plant using an unqualified in-house standard is the silent root cause of long-running assay bias.

Cover of The Dietary Supplement Operations Guide
For dietary supplement manufacturing

Putting Reference standard qualification into practice

It covers component identity testing and the lab results behind supplement release. If you make the standards, see the reference materials guide.

The Dietary Supplement Operations Guide · 35-page PDF

Get the guide See the industry page
Regulatory anchors
  • USP <11>
How V5 handles it
QMS — quality records next to the work they concern.
Deviations, corrective actions and quality review sit in the same system as production, so each quality record references the work order, step and lot it concerns.
Document control — one version in force, every change signed and explained.
Draft the next revision while the current one stays in use, approve it under your sign-off route, and track training on it — with the history kept.
Related terms
System suitability tests (HPLC/GC)Forced degradation & stability-indicating methodsReference Standard vs Reference MaterialCertified Reference Material
Software that covers Reference standard qualification
V5 Ultimate (Validation Management)
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