Resource library
Reference Material Resources
Reference material resources for starting-material identity, gravimetric preparation, unit and lot records, laboratory evidence, certificates and stability review.
- Guides
- 1 guides
- Glossary
- 2 glossary entries
- Checklist
- 9 buyer questions

Producer Evidence & Certificates
Three readings: what a certificate supports, whether homogeneity and stability evidence fits your property and conditions, and how a producer retrieves the records behind it. Your technical team still assigns values, evaluates uncertainty and approves certificates; these are not accreditation or clause-by-clause guidance.
GuideISO 17034 Evidence ReadinessA fictional 864-unit packet: preparation revision, unit custody, separate study statuses, certificate inputs and recipient history.Read the guide
GlossaryCertified Reference Material (CRM)RM versus CRM, value status, uncertainty and traceability, a real certificate in context and a fictional suitability exercise.Open
GlossaryReference Material Homogeneity and StabilityProperty-specific homogeneity, sample intake, transport, storage and opened-unit conditions, with a fictional evidence decision exercise.Open
Reference & Scope
NIST describes its own reference materials and current certificates. Producing a reference material is different from using a standard in another laboratory; this overview does not establish your accreditation or replace applicable standards.
Software Pages
Compare the production workflow and laboratory information with your own records, responsibilities and system boundaries.
Evaluate the software
Work through these questions with your production and quality teams, then use them to plan an evaluation with your own records.
The existing production guide remains email-gated. Review its product, market and system scope with your responsible team; printing is available in the reader. Open the existing guide offer.
Explore the workflow
The illustrated five-step workflow follows starting-material receipt, gravimetric preparation, filled-unit numbering, laboratory evidence, and a named person reviewing certificate inputs.
Explore the reference materials workflow