Store DCC uncertainty as data, not a spreadsheet string
"± 0.3" is not the uncertainty. See what a PTB DCC really carries — k, coverage probability, distribution — and why to store it, not re-key it.
Tag: ISO/IEC 17025
When Your Calibration Record Becomes Legal Evidence
The revised EU Product Liability Directive transposes 9 Dec 2026. Shifted burden of proof and court disclosure turn your calibration trail into a defence.
Signed DCC vs Spreadsheet: Tamper-Evidence at Audit
A re-keyed spreadsheet cell proves nothing at audit. A signed Digital Calibration Certificate is evidence your assessor accepts — and how to ingest one.
Inside a DCC: Anatomy of the PTB v3.3.0 Schema
A block-by-block tour of the PTB DCC XML schema v3.3.0: administrative data, measurement results, D-SI units, and the signature that makes it trustworthy.