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Tekmar Talk Blog

Headspace Analysis: Achieving the Best Performance through Careful Sample Preparation: Part 2

Posted by Betsey Seibel on Tue, Aug 19, 2014 @ 03:40 PM

In our first post about headspace gas chromatography (GC) analysis, we addressed the basics of the volatile components testing process. Static and dynamic headspace/GC analyses are surging in popularity driven by their ability to accurately determine blood alcohol levels and residual solvents in pharmaceutical production. As a result of their effectiveness, organizations in other industries such as cosmetics and food are using it to determine the presence and levels of volatile species in their liquid and solid samples. In this post, we will focus on how to get the best performance when implementing headspace/GC and the key issues to consider when preparing samples.

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Tags: Sample Preparation, Headspace

The Basics: QuEChERS Step by Step

Posted by Jason Davis on Mon, Nov 18, 2013 @ 01:24 PM

With the release of Teledyne Tekmar’s AutoMate-Q40, I thought it was the perfect time to explain the QuEChERS Method that the instrument is based on. Below is a basic, but thorough, overview of what QuEChERS is and how it is performed manually step by step.

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Tags: FDA, Sample Preparation, pesticide analysis, QuEChERS, SVOC, pesticides, AOAC 2007.01, EN 15662.2008, USDA, EFSA

Analytical Chemical Methods Technical Workshop on Hydraulic Fracturing

Posted by Teledyne Tekmar on Sat, Apr 13, 2013 @ 04:51 PM

The US EPA hosted a technical workshop on analytical chemical methods for hydraulic fracturing on February 25th in Research Triangle Park, NC. The goal of these workshops is to gather together stakeholders, technical experts, and EPA representatives to get updates on the progress of the EPA’s testing with regards to hydraulic fracturing. It also serves as a forum to discuss best testing practices and methodologies for this area. Teledyne Tekmar was privileged to participate as a speaker and participant in the round table panel discussions that coincided with the workshop.

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Tags: VOC, Teledyne Tekmar, Sample Preparation, Volatile Organic Compounds, drinking water, chromatography, Hydraulic Fracturing, Fracking, Analytical Instrumentation, Concentrator, Autosampler, Analyzer

Calibration by Dilution

Posted by Teledyne Tekmar on Sun, Jan 13, 2013 @ 04:49 PM

Automated sample preparation is built upon making instruments easier to use, faster, and more efficient. More recent features to purge and trap systems like mass flow controllers and variable volume standard addition, give more method flexibility than legacy products. The 27 mL syringe on our Atomx VOC sample prep system allows for dilution of high level samples as well as automated methanol extractions.

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Tags: VOC, Teledyne Tekmar, GRO, Gasoline Range Organics, Sample Preparation, Volatile Organic Compounds

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