Relative Standard Deviation

A Primer on Relative Standard Deviation (RSD)

Recalling what you learned in algebra class may be the best way to explain Relative Standard Deviation (RSD).  RSD is the Standard Deviation from a pool of data over the average, thus the standard deviation relative to the average or the relative standard deviation. In the video below, Chemical Solutions President Brian LaBine offers a… Read More >

Francine Walker, Speaks about Lead in Drinking Water

During the Is Your Drinking Water Lead-Free segment on ABC27 news, Francine Walker, our Technical Director, speaking to some of the issues involving lead in drinking water.  ABC sent samples to us for analysis, and followed with some footage shot at SGS along with comments from Francine. Excerpt from the story: Francine… Read More >


The importance of the taking time off during the holidays

As most of our customers know, CSL will be closed December 23 through December 26 for the Christmas holiday. We’ve made this announcement to our customers through e-blasts, social media and e-mail signatures so they can plan for our departure during this time. We realize it’s not always possible to take off work during the… Read More >

Francine Walker to present at Perkin Elmer INTour Seminar

SGS’s Technical Director, Francine Walker, will be a featured presenter at this week’s INTour seminar.  The INTour seminar is hosted by Perkin Elmer, and will be held Thursday, October 20th, 9 – 3:30 at the Holiday Inn and Suites of Marlborough, 265 Lakeside Avenue, Marlborough, MA.  Francine’s presentation, entitled ‘Elemental Impurities – USP <233>… Read More >

PQRI/USP Elemental Impurites Workshop – Nov. 9-10

Given the pending changes to the USP General Chapters USP <232> and <233> – please consider attending this workshop, hosted by the Product Quality Research Institute (PQRI) and USP.  It will be held Wednesday and Thursday, November 9-10 at USP’s meeting center in Rockville, MD.  Both Francine Walker, CSL’s Technical Director, and Brian LaBine, CSL’s President,… Read More >

heavy metals testing

We Are Heavy Metals Testing

SGS is an analytical testing lab. We test for anything that someone can put in or on their body. We focus exclusively on heavy metals testing, which allows our lab to provide premier expertise, quality and customer service. In less than two minutes, we’ll share our holistic approach to chemistry, the… Read More >

New Technology Aquired

Part of CSL’s commitment to our clients is to be sure that we have the latest cutting-edge technology and enough laboratory processing capacity to take on large projects on short notice. Recently, CSL has acquired two new pieces of technology to be sure we keep that commitment. One new piece of equipment is a new… Read More >

Joshua Center Visit

Chemical Solutions recently hosted a group of middle school students from the Joshua Center in Harrisburg for a hands-on learning experience in the laboratory. The students are excited to learn more. Our analysts Emily and Hahn explain chemistry concepts to the group. Our president Brian leads the group on a tour of the new laboratory. Students… Read More >

CSL Co-Hosts Webinar on Steps to Implementing USP <232> and <233>

Francine Walker, our Technical Director, was a guest speaker on a webinar that CSL co-hosted with Spectroscopy and Milestone Inc. EVENT OVERVIEW Elemental impurities in pharmaceutical products can be introduced from a number of sources, including catalysts, raw materials, production processes, and packaging materials. The implementation of the new USP chapters <232> and <233> on… Read More >

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