CRM Solutions

Courtney Dillon

Courtney Dillon

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What's your flash point?

[fa icon="calendar'] Apr 29, 2021 11:34:12 AM / by Courtney Dillon posted in Certified Reference Materials, Paragon Scientific

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Flash point is the lowest temperature at which a liquid (usually a petroleum product) will form a vapor in the air near its surface that will “flash,” or briefly ignite, on exposure to an open flame1. Back in the late 1800s, flash point was a lived experience. Households primarily used kerosene for heat and light, and open flame was a part of every day. Bad kerosene – fuel diluted with gasoline or other contaminants – delivered unpredictable flash points and bad results. Fires and explosions were fairly common. These shared catastrophes ushered in a focused effort to establish meaningful standards for various grades of petroleum. Both ASTM2 and OSHA3 have created standard flash point measurement methods that are used today.

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Why is viscosity testing important in fuel analysis?

[fa icon="calendar'] Apr 15, 2021 1:30:00 PM / by Courtney Dillon posted in Certified Reference Materials, Paragon Scientific, Viscosity

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If you asked Canadian petroleum chemist J.S. Charlesworth in 1947 what the most important characteristic of lubricating oil was, he would have said, Viscosity1. After all, he said, “it’s a measure of the oil’s resistance to flow, or of its internal friction…[i]t indicates…the ability of an oil to support loads.” At just about the mid-20th century, the American Society of Testing and Materials (ASTM) published a set of standards for the measurement of viscosity of petroleum products2. Of course, the importance of viscosity is well known today, and there are standard methods worldwide to ensure uniformity of testing. 

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3 Things to Consider Before Analyzing a Sample

[fa icon="calendar'] Sep 23, 2020 12:38:00 PM / by Courtney Dillon posted in Sample Preparation, Certified Reference Materials, ICP

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  1. Is your instrument optimized?

In a recent blog we explored the importance of instrument optimization for ICP-OES and ICP-MS, but all instruments should be frequently checked to confirm they are operating as expected. Preventive maintenance and appropriate start up and shut down SOPs are key to the integrity of analysis.

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Why are Tuning Solutions One of the Most Used Standards in ICP-MS Labs?

[fa icon="calendar'] Jun 16, 2020 9:30:00 AM / by Courtney Dillon posted in Certified Reference Materials, ICP, Aqueous standards

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An ICP-MS system will operate and deliver numerical data even if not set up correctly or operating at expected levels. As discussed in a previous blog, Improve your ICP-OES Performance by using an Internal Standard, internal standards can be used to compensate for a variety of factors that degrade analytical performance, however, proper instrument set-up is core to data integrity. As a result, tuning of ICP-MS instruments is considered by most users to be a daily, if not more frequent, activity, and a prerequisite for achieving accurate results. Best practices dictate, and many standard methods require, that a sample sequence begin with an optimization block, during which a tuning solution is used to set-up the instrument.

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Exploring the “Why” and “How” of ICP-OES Wavelength Calibration

[fa icon="calendar'] Jun 10, 2020 10:00:00 AM / by Courtney Dillon posted in Certified Reference Materials, ICP, Aqueous standards

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ICP-OES is the go-to-technique across a number of industries, and when configured correctly, today’s instruments yield detection limits of 1 to 10 ppb for the majority of elements. Although a powerful elemental analysis technique, it is in fact a simple comparator, incapable of making absolute measurements. 

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