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    Why Concentrate Down to 1 mL End Point? Can you go down to 0.5 mL?

    April 29, 2021 at 3:00 PM / by Michael Ebitson


    When working with regulated environmental methods have you ever asked yourself why are all these extracts concentrated down to one milliliter (mL) final volume? This is true for most soil and aqueous methods. Of course, a few methods will require a more diluted final volume but not many.

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    The Importance of Quality Control on Lab Solvents & SPE Consumables

    April 22, 2021 at 5:00 PM / by Deanna Bissonnette


    Ever wonder if you need to perform quality control (QC) on solvents and solid phase extraction (SPE) consumables? Well, the answer is yes! You want to make sure that your disks and solvents are good to go before running real-life samples and risk losing that sample. Not only that, but QC samples also help to identify any background in your lab's extraction procedures.

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    What is the difference between an Internal Standard and Surrogate?

    April 1, 2021 at 1:00 PM / by Michael Ebitson


    Have you ever worked with new methods and said to yourself “yes I know what these internal standards and surrogates are measuring and when to add them to the samples”? Sounds familiar right? Well, I remember when I first started working in the laboratory and needed to fully understand and follow all method protocols and standard operating procedures (SOPs). One of the questions I asked was, what is the difference between method 525.2 and its internal standard and surrogates versus every other method we extract and analyze?

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