Articles Published in Cal Lab Magazine
by James G. Salsbury When an accredited laboratory makes a statement of conformity to a specification, ISO/IEC 17025 requires the use of a decision rule that takes into account the level of risk associated with […]
by Dan Wiswell We’ve all heard people speak of accuracies and tolerances in more colorful language than what would be expected in a metrology lab. “Plus-or-minus a hand grenade” or, “Close enough for government work” […]
Over the years, I have had one foot in the metrology/test and measurement world and the other foot in software and software architecture. With two different perspectives, I tend to look at things from multiple […]
by David Lohbeck As an assessor, I am often asked the following question: “Is a calibration certificate issued from an ISO/IEC 17025-accredited laboratory always acceptable?” My answer: “No, it may not be.” Read on to […]
by Walter Nowocin There are many regulatory requirements that bio-medical companies need to follow; however, FDA 21 CFR Part 11 – Electronic Records; Electronic Signatures is one of the more obscure and misunderstood of the […]
by Christopher L. Grachanen It is most gratifying to see a grass roots initiative spanning many years come to full fruition. Such is the case for U.S. Department of Labor’s formal recognition of calibration practitioners. […]
We have all heard this before: Think outside the box! But this is easier said than done. It is especially difficult to notice your own blinders because we all see things from our own point […]
by David Southworth Thermometry bridges play a crucial role in temperature measurement, particularly when it comes to the interpolation of the Standard Platinum Resistance Thermometer (SPRT) specified by the ITS-90. However, to achieve precise and […]
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