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Mass Spectroscopy for Lawyers Part 6: How do they come to a qualitative measure using software?

On July 14, 2011, in Equipment, Ethics, Ethics: Scientist, GC-FID & GC/MS, Identification, Pattern Recognition, Standards, by Justin J. McShane

In a series of posts, we are going to talk about Mass Spectrometry. Introduction-The different configurations and the Electron Impact process What types of mass analyzers are there? What type of detectors are there? What types of analysis can be done? How do you read the output? How do they come to a qualitative measure […]

A rose by any other name??? More on Metrology and its nomenclature

On March 24, 2011, in Metrology, Standards, by Justin J. McShane

A rose by any other name would smell as sweet… is a quotation by William Shakespeare from his play Romeo and Juliet meant to say that the names of things do not matter, only what things are. In the play Romeo and Juliet, the line is said by Juliet in reference to Romeo’s house, Montague […]

Can (insert analyte) be tested for by GC-FID or GC-MS?

On February 3, 2011, in Chemistry, GC-FID & GC/MS, Identification, Laboratory Procedure, Standards, by Justin J. McShane

One of the most frequent questions that I get from other lawyers is something like this: Can synthetic marijuana be tested for by GC-FID or GC-MS? Can marijuana be tested for by GC-FID or GC-MS? Can methamphetamine be tested for by GC-FID or GC-MS? The truthful answer is, it depends. Let’s take for example the […]

Conclusion to the twelve part ISO 17025 introduction

On February 1, 2011, in Ethics: Lawyer, General Information, In The Courtroom, Metrology, Standards, by Justin J. McShane

In a series of posts, I am going to introduce the reader to the existence of ISO 17025 and its importance. I am going to introduce it in bite-sized bits for easy digestion. Just like all matters of learning, knowledge is incremental over time and builds upon previous exposure. So far we have answered the […]

How ASCLD/LAB International Conflicts with ISO 17025 and Honest Uncertainty Measurement Reporting

On January 27, 2011, in Forensic Discipline, In The Courtroom, Metrology, Standards, by Justin J. McShane

Who is the “customer” per ISO 17025 and why is it important

On January 25, 2011, in Standards, by Justin J. McShane

How ISO 17025 can help minimize the particular problem of fraudulent credentials of forensic scientists

On January 20, 2011, in Ethics, Ethics: Scientist, In The Courtroom, Standards, by Justin J. McShane

Who is the analyst is answered by ISO 17025

On January 18, 2011, in Forensic Discipline, Standards, by Justin J. McShane

Scan this QR Code into your phone for bonus information about why determining who the analyst is is very important In a series of posts, I am going to introduce the reader to the existence of ISO 17025 and its importance. I am going to introduce it in bite-sized bits for easy digestion. Just like […]

ISO 17025 definitions: Policies, Procedures, Instructions, Documents and Records

On January 13, 2011, in Standards, by Justin J. McShane

Is your state crime lab accredited?

On January 11, 2011, in Forensic Discipline, Standards, by Justin J. McShane

As we recently discussed in our series about ISO 17025 “Why is ISO 17025 so important to us in forensic science?“: While accreditation does not equate to automatic quality in results, it means that a lab adheres to some sort of external Quality Management System (QMS). How worthwhile that QMS is versus what is necessary […]