Feature articles: "Some Perspective on Risk and Decision Rules in Calibration" by James Salsbury and "Sidestepping the Potholes in DC Voltage Traceability" by David Martson. Also included, industry news, events, Cal-Toons by Ted Green, and more!

Volume 30:3 includes feature articles: "Certificate of Calibration - Accredited Versus Unaccredited Calibration," "The Hidden Value of FDA 21 CFR Part 11 - Electronic Records & Electronic Signatures," and "Near Three Decades in the Making: The U.S. Dept. of Labor's OOH Now Includes Calibration Practitioners." Also, metrology industry news, events, and more!

Feature articles include: "How to Calibrate Thermometry Bridges: ensuring Accurate Temperature Measurements " by David Southworth, and "A Better Way to MET/CAL® With a Twist of Object-Oriented Programming" by Michael Schwartz. Also in this issue is another "In Days of Old," CAL-TOONS by Ted Green, upcoming metrology events and more!

Volume 30:1 Feature articles include: "Let's Talk About Bias: Measurement Bias," by Henry Zumbrun; "Improving the Uncertainty of DC Current Measurements," by Kai Wendler, et al.; and Christopher Grachanen's "Stumbling Upon a Best Calibration Practice."

Feature articles include: "Force Calibration Guidance for Beginners, Part 2," "Effects of Impurities on the Freezing Plateau of the Triple Point of Water, and "Practitioner's Perspective on the GUM Revision, Part 2: Examples and Resolutions to the Ballico Paradox." Also included is a calendar of events, news, CAL-TOONS by Ted Green, and more!

Feature articles include: "Force Calibration Guidance for Beginners," "Practitioner's Perspective on the GUM Revision, Part 1: Two Key Problems and Solutions," and "US Calibration Occupation Demographics." Other content includes Industry News, Cal-Toons, a history of instrument manufacturing in the Merrimack Valley, and more! 

Volume 29:2 Feature articles include "Project LiBforSecUse: Quality Assessment of Electric Vehicle Lithium Ion Batteries for Second Use Applications," and "Metrological Challenges of Plastics Recycling." Also, calendar of events, CAL-TOONS by Ted Green, news, and more!

Feature articles include: "Overview of the ISO/IEC 17025 Revision Process," "ENOB: the Best Digitizer Performance Metric," and "Additive Manufacturing: New Frontiers for Production & Validation." New for this  issue is a running department called "In Days of Old," along with "Automation Corner," CAL-TOONS by Ted Green, Industry News, and more!

Feature articles include: a wrap up of Metrology 101 articles on Temperature Calibration, "A Case Study on Interlaboratory Consensus Building," and "TAR Versus TUR: Why TAR Should RIP ASAP." Also included is a calendar of metrology events, news, CAL-TOONS by Ted Green, and more!

Feature articles: "Temperature Calibrations, Part 3," "Comparison Demonstrates Factor of Three Improvement in Gas Flow Measurements," and "Maintaining a Calibration Management Software System in a Regulated Environment."  Also included is Industry and Research News, Cal-Toons by Ted Green, and more!

Feature articles include: "Metrology 101: Temperature Calibrations, Part 2," "Implementing a Calibration Management Software System in a Regulated Environment," and "Metrology Education at Michigan's Monroe County Community College." Also, included in each issue: Calendar of metrology training and events, industry & research news, Cal-Toons by Ted Green, and more!

Feature articles include: "Temperature Calibrations, Part 1," "Project of an Automated Multiple Decade Ratios Precision Divider for Generation of Low DC Voltages," and "Selecting a Calibration Management Software System in a Regulated Environment." Also included, Research News, Calendar of industry events, CAL-TOONS, Automation Corner, and more!

Feature articles: "Customer Technical Qualification in Analyzing of the Accreditation Scopes of Calibration Laboratories," "An Intercomparison Between Primary High-Pressure Gas Flow Standards with Sub-Permille Uncertainties," and "Enhancing the Accuracy of a Power and Energy Standard." Also included are 2021 industry live and virtual events, research news, CAL-TOONS by Ted Green and more!

Feature articles include: "Two Simple and Practical Methods for Combining Prior Information with Current Measurement in Uncertainty Analysis, " by H. Huang and "Sampling with a 3458A Type DMM," by R. Lapuh. Also included is an exhaustive listing of industry live and virtual events & independent study, research news, CAL-TOONS by Ted Green and more!

Feature articles include: two on Vector Network Analyzer calibration "Verifying the Integrity of S-Parameter Measurements" by Christopher Grachanen; "Thru-Reflect-Line (TRL) Calibration" by Brian Walker; and one on the redefinition of the SI Units, "Redefined but Not Perfected: The On-going Saga of the Kilogram," by Patrick Abbott of NIST. Also included is an updated schedule of live events and webinars, industry news, CAL-TOONS by Ted Green, and more!

Feature articles include: "Choosing the Proper Measurement Tool," by J. Fuehne and "Converting a mV/V Load Cell Signal into Engineering Units," by H. Zumbrun. Also included is an extensive Independent & Online Learning listing for measurement related training, Industry and Research News, CAL-TOONS by Ted Green, and more!

Feature articles include: "A Unified Formula for Uncertainty Estimation in Interlaboratory Studies and Key Comparisons, " by Hening Huang; "Cost and Accessibility of Metrology, Calibration, Testing, and NDT Training, " by Dennis Destefan and William Hinton; and "Realized Value of Industry Events," by Hannah Eilers.  Also included is an updated calendar of industry & training events, news, CAL-TOONS by Ted Green, and more!

Feature articles include Manuel Rodríguez's "Pass or Fail: With Which Probability?," and Henry Zumbrun's "Aircraft and Truck Scale Calibration."  Also included: upcoming training and conferences, industry & research news, CAL-TOONS by Ted Green, and more!

Feature articles include Pedro Adame's "Probability of False Acceptance Estimation for Asymmetrical Tolerances," Henry Zumbrun's "The Importance of Adapters in Force Measurement," and Michael Schwartz's "Creating Sustainable Metrology Software."  Also included: an updated listing of Online & Independent Study programs that provide introductory and continued learning for calibration technicians, educational and research press releases, CAL-TOONS by Ted Green, and more!

Feature articles: "Development of RF and Microwave Metrology Capability," "Project TracePQM - Traceable Measurements of Power and Power Quality Parameters," and a "Periodic-ish Table of Metrology."  Also included is a Calendar of Upcoming Events, Industry & Research News, CAL-TOONS by Ted Green, and more!

Feature articles: "Metrology 101: A Tool for Validating Spreadsheets," and "Contemporary Evaluation of Measurement Uncertainties in Vector Network Analysis." Also included is a calendar of upcoming metrology events, Industry and Research News, CAL-TOONS by Ted Green, and more!

Feature articles: "Metrology 101: Calculating the Frequency Response of an Oscilloscope from a Transition Duration (Risetime or Falltime) Measurement," and "In Focus: Colorado Engineering Experiment Station (CEESI)." Also included is a calendar of upcoming metrology events, Industry and Research News, CAL-TOONS by Ted Green, and more!

Feature articles: "Metrology 101: A Comparison of Deadweight Testers and Digital Pressure Calibrators," "More on the t-Interval Method and Mean-Unbiased Estimator for Measurement Uncertainty, " and "A Risk Based Approach to Calibration Laboratory  Infrastructure Modernization."  Also included is a calendar of upcoming metrology events, CAL-TOONS by Ted Green, and more!

Feature articles: METROLOGY 101 on "Calibrating a Micropipette," "An Introduction to the Differences Between the Two Most Recognizable Force Standards," and "Creating a Taxonomy for Metrology." Also included is a Calendar of Events, CAL-TOONS by Ted Green, Automation Corner, and more!

Feature articles: METROLOGY 101 on "Basic Rise Time Measurements," "Large Volume Cone Differential Pressure Meters," and "History of Lowry PMEL School."  Also included is a Calendar of Events, Industry Research News, CAL-TOONS by Ted Green, and more!

Feature Articles: "Calibrating Long Scale DMMs with Fluke MET/CAL and the Fluke 57xxA Through 90-Day Characterization" by Michael Johnston, "Using Metrology.NET to Calculate ISO/IEC 17025 Uncertainties for Fluke MET/CAL" by Michael Schwartz, "The New ISO/IEC 17025:2017" by Dr. George Anastasopoulos, and "Metrology - Why  We Do What We Do" by Paul Hanssen. Also, Calendar of Events, Online & Independent Study, CAL-TOONS by Ted Green, and more!

Feature articles begin with a second installment of Richard Fertell's series on a timed dispense methodology, or "Weigh Standard Assessment," for flow calibration. Henry Zumbrun defines measurement risk and the role of Test Uncertainty Ratios, followed by "Chapter Two: The Pendulum, Precision, and Ancient Metrology" by Roland Boucher. And finally, Dr. Alex Lepek contributes his article titled "A Standard Text File Format for the Exchange of Calibration Data Required for Analysis."  

Feature articles include "How to Determine Resolution Uncertainty, " Uncertainty Propagation for Force Calibration Systems," and "The  Pendulum and Standards of Measure in the Ancient World" Also included: Calendar of Events, Automation Corner, and CAL-TOONS!

Feature articles include "On the Welch-Satterthwaite Formula for Uncertainty Estimation," "Calibrating Liquid Flow Instruments beyond +5 to +90 degrees C," "The New ISO 17025: DIS Stage," and "Petitioning the SOC for Inclusion of Job Descriptions for Metrologist & Calibration Engineer." Also, a special end-of-year Cal-Toon, Industry News, Automation Corner, and more!

In this issue: The new ISO 17025 - what to expect, Calendar, Humidity calibration using portable relative humidity generators and much more...

October-December 2023

July-September 2023

April - June 2023

January-March 2023

October-December 2022

July-September 2022

April - June 2022

January - March 2022

October - December 2021

Jul - Sep 2021

April - June 2021

January - March 2021

October - December 2020

July - September 2020

April - June 2020

January - March 2020

October - December 2019

July - September 2019

Apr - Jun 2019

January - March 2019

October - December 2018

July - September 2018

April - June 2018

January - March 2018

October - December 2017

July-September 2017

April-June 2017

January - March 2017

October-December 2016

July-September 2016

CAL LAB Magazine is a quarterly publication that covers measurement science and instrument calibration for managers, engineers, and technicians. Feature articles cover all aspects of calibration theory and practice, traceability, maintenance of standards, automation, measurement methods, error quantification, metrology education, interlaboratory cooperation, regulatory, and business aspects of metrology.

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CAL LAB: The International Journal of Metrology- All Issues