December 28th, 2020

Electron microscopy image of the SARS-CoV-2 virus.
 

COVID-19 Infection Statistics

Although anti-COVD vaccines are rolling out and people are being immunized, as of early late December 2020, the rate at which daily, newly reported COVID-19 cases has continued to rise (Figure 1). In my 29 June 2020 What’s New article I discuss some of the limitations of such global statistics. In that post, I argued that the statistics would be more meaningful if the U.S. Centers for Disease…

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October 7th, 2020

 

Meme from the 1986 movie, Heartbreak Ridge (Gunnery Sergeant Thomas Highway – Clint Eastwood – is providing sensitivity training to his Marines).

 

The Confusion

Over the past several months, I have received questions about the impact of test method sensitivity on control limits. In this post, I will do my best to explain why test method sensitivity and control limits are only indirectly related.

Definitions (all quotes are from ASTM’s online…

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October 2nd, 2020

On 29 July 2020, Drs. Neil Canter, John Howell, and I, and Mr. Bill Woods presented an STLE webinar panel discussion about reducing COVID-19 risk in the metalworking workplace environment. You can access the webinar at: https://www.stle.org/files/TLTArchives/2020/10_October/Webinars.aspx?WebsiteKey=a70334df-8659-42fd-a3bd-be406b5b83e5.
Last week Ms. Vicky Villena-Denton, Editor-in-Chief at F & L Asia, Ltd., interviewed me as episode six of the F + L Webcast series. During the interview,…

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August 27th, 2020

Quo Vadis – or Déjà vu All Over Again, or are metalworking fluid compounders, managers, and end-users once again being thrown to the lions?

The Short Version

A decade ago, the U.S. EPA’s Office of Pesticide Programs (OPP) issued their Reregistration Eligibility Decision (RED) on the most commonly used formaldehyde-condensate microbicide – triazine. In the triazine RED, the EPA limited the maximum permissible active ingredient concentration in end-use diluted metalworking…

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July 8th, 2020

How to Remain Safe and Productive in Working with Metalworking Fluids During the COVID-19 Pandemic.
Live webinar taking place July 29th, 2020 12pm CT

Three colleagues and I will be discussing COVID-19 risk mitigation in the workplace environment.  If you are interested, I recommend signing-up early.  Per the STLE blurb I’ve copied in its entirety below, participation is limited to the first 100 who sign up.

 Participants:

Dr. John Howell

Dr. Fred Passman

Bill…

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