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    How to demonstrate low background contamination for PFAS testing

    February 23, 2023 at 2:00 PM / by Evan Walters


    Environmental laboratories are often required to demonstrate that their procedures do not introduce background contamination or interferences that would result in false positives or poor analytical performance.

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    What are peak asymmetry requirements for PFAS using EPA Method 537.1?

    February 9, 2023 at 3:00 PM / by Evan Walters

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    In the United States, the Environmental Protection Agency (EPA) establishes performance criteria in which laboratories must demonstrate their technical capability to produce results that are accurate and consistent with industry standards. In this blog, I will explain what peak asymmetry is and why laboratories utilize it for EPA method 537.1.

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    Why and when is florisil cleanup necessary with sample extracts?

    February 2, 2023 at 1:32 PM / by Michael Ebitson posted in Environmental


    No matter what your sample will be tested for, if you are extracting with liquid-liquid extraction (LLE), solid phase extraction (SPE), accelerated solvent extraction (ASE) or microwave, your sample's extracts will appear to look clean or dirty.   

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