Articles Published in Cal Lab Magazine
Over the years I have watched several labs go through the decision process to purchase new hardware. Most labs have the same process: look at the work load requiring the new hardware, and calculate the […]
by Michael Schwartz Automation has its own quality system automatically built in. When software performs the same test, the same way over and over again, it can’t be wrong. There is no fake it till […]
by Donald Larson Many digital oscilloscopes have the capability of acquiring, displaying, and storing a digitized representation (the waveform) of an electrical signal. This digitization creates data, the waveform samples, that have discrete amplitude values […]
by Sita Schwartz, Editor The Colorado Engineering Experiment Station, Inc. (CEESI), a subsidiary of Western Energy Support & Technology, Inc. (WEST), provides accredited NIST traceable calibration for numerous types of flow meters for customers around […]
by Sean Nielson When choosing which instrument to use when calibrating pressure, the two most popular choices are deadweight testers and digital pressure gauges/calibrators with a pressure comparator. Each has its advantages and disadvantages. The […]
by Hening Huang This paper further explores the t-interval method and the mean-unbiased estimator for uncertainty estimation with a small number of measurements. It describes the logic behind the error bound-based definition of uncertainty, which […]
by Kevin R. Abercrombie Laboratories are often faced with budget constraints that limit the amount measurement system infrastructure upgrades that can be accomplished in any fiscal year. This paper describes a risk based approach to […]
by Martin de Groot This paper discusses the calibration of pipette, with particular attention to the type that is used and calibrated most frequently. This is the so-called air-displacement pipette, single channel, adjustable volume pipet. […]
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