Author Archives: Alan Rawle


Alan Rawle is our Applications Manager. Alan has a degree in Industrial Chemistry and a PhD in catalysis, which was where he first encountered the topic of particle size. He developed a career in liquid crystal displays engineering, electro optics and lasers, followed by 3 ½ years in technology transfer based at the Royal Signals and Radar Establishment. He joined Malvern Instruments 1990, and his current role involves assisting customers in their applications, key account support, writing, submitting & presenting peer-reviewed papers and writing application notes. He also has links with international bodies such as NIST, ISO, ASTM.

Published 15 Jun 2017

Food and Drink Joint Seminar – Malvern PANalytical

To support the growing interest in Malvern PANalytical technologies for use in the food and drink industry, we held a joint free seminar devoted to this extremely important industry sector. This took place on Wednesday, June 8th in the Marriott Hotel Schaumburg, Chicago…READ MORE >

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Published 13 Jun 2017

Laser diffraction, and Sieving: The comparison – Q&A

I recently presented a webinar exploring the practical aspects of sieving method – the advantages and disadvantages.  I compared the method to other techniques such as laser diffraction indicating the increased wealth of information that can be obtained with these more…READ MORE >

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Published 29 Dec 2016

When does the extinction coefficient, Qext reach 2.00?

In light scattering theories and approximations, we assume that for large particles the extinction coefficient, Qext, is exactly 2. This is the basis of the Fraunhofer approximation meaning that one unit of light is lost from the shadow of the…READ MORE >

Published 15 Dec 2016

The Latest Trend In the European Commission Joint Research Council

Paul Kippax alerted me to an interesting piece in Chemical Watch (Global Risk and Regulation News). It’s based on a comment by the European Commission Joint Research Council (JRC) that: ‘The term “particle size” does not sufficiently describe the exact…READ MORE >

Published 6 Dec 2016

Your letters to Father Characterization – Festive Webinar

To celebrate the knowledge, support and dedication of our employees we are introducing our first live panel discussion to help you solve your current challenges. We invite you to write in your questions, comments, feedback and wish lists for our…READ MORE >

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