Author Archives: Khanh Nguyen
Reverse Traceability: How to Run a Calibration Recall and Impact Analysis
When an instrument fails calibration, reverse traceability traces it back to every measurement it made...
What a CMC Means on an ISO/IEC 17025 Accreditation Scope
A CMC (Calibration and Measurement Capability) is the smallest uncertainty an accredited lab can claim...
Proficiency Testing in ISO/IEC 17025 Calibration Labs: Proving the Numbers
Proficiency testing and interlaboratory comparisons are how an ISO/IEC 17025 calibration lab proves its measurements...
How to Set and Adjust Calibration Intervals: A Reliability-Based Guide
Who sets calibration intervals, how to adjust them with End-of-Period Reliability data, and how to...
How to Read an ISO/IEC 17025 Calibration Certificate (Quality Manager’s Guide)
Learn how to read an ISO/IEC 17025 calibration certificate: the 12 required elements, as-found vs...
Test Uncertainty Ratio (TUR) and Decision Rules: How to Read Pass/Fail on a Calibration Certificate
What test uncertainty ratio (TUR) means, why 4:1 matters, and how ILAC-G8 decision rules and...
Out-of-Tolerance Calibration Results: What They Mean and What to Do Next
An out-of-tolerance (OOT) calibration result is not a crisis — it is a process. Learn...
How Often Should You Calibrate a Keysight ECal Module? A Recalibration Interval Guide
Most manufacturers specify a 12-month recalibration interval for an ECal (electronic calibration) module, and sooner...
On-Site NIST Certification: Calibrate Your Cold-Storage Monitoring Without Downtime
Techmaster certifies your hospital fridge and freezer monitoring on-site — NIST-traceable, ISO/IEC 17025 accredited, no...
ECal Module Calibration: An Accredited, Fast Alternative for Your Electronic Calibration Modules
ECal (electronic calibration) module calibration re-characterizes the impedance standards stored inside a VNA ECal module...