2016 – Cal Lab Magazine

Calibration of equipment: Govt asks pollution watchdogs to get their instruments calibrated to maintain accuracy – Times of India

December 28, 2016 Office

Admitting that most of the pollution measuring and biomedical equipment are “not calibrated as per standards in the country which affects quality of the measured data”, the Centre has asked pollution watchdogs – CPCB and […]

Uncertainty Calculations That Excel!

December 2, 2016 Michael Schwartz

The other day I read an article titled “Five easy steps for adding measurement uncertainties to your calibration data.” It described a very easy process of copying cells from one Microsoft Excel® file to another, […]

Noise, Temperature, and the New SI | NIST

November 24, 2016 Office

NIST has recently made substantial improvements to its Johnson-noise thermometry system, which is playing a vital role in the worldwide effort to determine the value of a key physical constant in time for the impending […]

On the Welch-Satterthwaite Formula for Uncertainty Estimation: A Paradox and Its Resolution

November 22, 2016 Office

by Hening Huang The Welch-Satterthwaite (WS) formula estimates an “effective degrees of freedom” of an approximate Chi-square distribution formed from a combination of several sample variances of independent normal populations. The effective degrees of freedom […]

Calibrating Liquid Flow Instruments Beyond +5 °C to +90 °C

November 22, 2016 Office

By Richard Fertell, Hamed Ershad, York Xu, Osborne Gumbs, Tammy Tran This article is the first of a series describing how to perform liquid flow rate calibrations at fluid temperatures below +5 °C and above […]

Petitioning the SOC for inclusion of Job Descriptions for Metrologist and Calibration Engineer

November 22, 2016 Office

by Christopher L. Grachanen On July 22, 2016, the US Bureau of Labor Statistics (BLS) published their second federal register denoting proposed changes and additions for the upcoming 2018 Standard Occupational Classification (SOC) system. The […]

The New ISO/IEC 17025 – DIS Stage

November 22, 2016 Office

by Dr. George Anastasopoulos As we discussed in my previous relative article “The new ISO/IEC 17025 – What to expect”, ISO/IEC 17025 was first issued in 1999 by the International Organization for Standardization (ISO) and […]

Electro Rent Corporation to Acquire Microlease

November 17, 2016 Office

LOS ANGELES / LONDON – 16 November 2016 – Electro Rent Corporation today announced it entered into an agreement to acquire Microlease from Lloyds Development Capital. The transaction is expected to close during Q1 2017. […]