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      Environmental Pollution – Are We All Doomed?

      December 16, 2020 at 2:18 PM / by Maura Rury posted in SPE solid phase extraction, application

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      Have you ever stopped to enjoy a bright, vibrant sunset, only to have that really annoying friend interrupt your thoughts with a comment like “you know you’re just looking at all the pollution in the air, right?”

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      Everything You Wanted to Know About EPA Method 8270 But Were Afraid to Ask

      December 16, 2020 at 2:17 PM / by Deanna Bissonnette posted in SPE solid phase extraction, EPA Method 8270, application

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      On the surface, EPA Method 8270 seems pretty straightforward.  The first version of this method was published over a decade ago and many environmental labs are processing samples according to the guidelines in this method.

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      The Hidden Dangers of Organic Solvents

      December 16, 2020 at 2:16 PM / by Maura Rury posted in SPE solid phase extraction, application, organic solvents

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      “Our laboratory uses organic solvents every day.  Should we be concerned about solvent exposure?” I hear this question fairly often and the short and simple answer is: YES. But if this were a simple yes/no question, I wouldn’t have anything else to say, and this would be the shortest blog post that’s ever been written.

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      5 Sources of Phthalate and Adipate Contamination You Probably Didn’t Know About

      December 16, 2020 at 2:16 PM / by Andrew Taylor posted in SPE solid phase extraction, application

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      “Why do I keep seeing background contamination from phthalate and adipate when I do extractions for semi-volatiles?” This is one of the most common questions I’ve been asked when I’m traveling in the field. It’s an issue I’ve come across in my own lab on occasion and if you can’t find the source of your contamination, it can turn routine application work into a troubleshooting nightmare. Given how often I’ve seen these compounds cause contamination issues, I thought I’d review some of the most common sources for these.

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      Overcoming drying and concentrating bottlenecks in the lab

      December 15, 2020 at 11:33 AM / by Matt Harden posted in SPE solid phase extraction, drying extracts, TurboVap, drydisk, concentration, solvent drying

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      Working in an environmental lab requires a lot of concentration, both mentally and for the samples that you are working with. When New England finally begins to thaw and local companies rush to get their samples completed, a bottleneck that is usually experienced is the drying and concentration of so many samples.

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      Reusable vs single-use disk holders – Which is best-suited for your application?

      December 14, 2020 at 3:09 PM / by Michael Ebitson posted in SPE solid phase extraction, reusable disk holders, single-use disk holder

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      Have you ever thought to yourself am I using the best solid phase extraction disk offering for my application? Or can our prep lab turn samples around more efficiently if we choose a different SPE disk platform such as a single-use disk holder instead of cleaning our reusable holders? Those are just a few questions I receive when working with sample prep solutions with customers when SPE disks are brought up in the conversion.

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      SLE, SPE and LLE – How are Those Different?

      December 14, 2020 at 3:07 PM / by Maura Rury posted in SPE solid phase extraction, Solid-phase extraction, LLE liquid-liquid extraction, LLE, SLE, educational

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      Liquid-liquid extraction (LLE), supported liquid extraction (SLE), and solid-phase extraction (SPE) have existed for decades and if you’re doing organic sample preparation, you’re probably quite familiar with at least one of these techniques.  But are you familiar with all of them?  How are they similar?  How are they different?  Let’s review!

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      Does it matter whether your dilution solvent is water-miscible?

      December 14, 2020 at 3:04 PM / by Deanna Bissonnette posted in SPE solid phase extraction, Drinking water, LLE liquid-liquid extraction, water miscible solvents, CLLE continuous liquid liquid extraction, EPA Method 8270, EPA Method 3500

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      For anyone who processes samples in an EPA-regulated laboratory, you know that these methods can be very specific in some spots, and incredibly vague in others. 

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      Are Your Proficiency Testing Results Failing for Method 1664?

      December 14, 2020 at 3:01 PM / by Michael Ebitson posted in SPE solid phase extraction, LLE liquid-liquid extraction, tech tips, oil and grease, epa method 1664b, proficiency testing

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      It is that time of year again when laboratories are fulfilling accreditation requirements for the methods that they offer. One of the requirements that must be met for each method is called proficiency testing (PT).

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      Organochlorine Pesticides: The Good, the Bad and the Ugly

      December 14, 2020 at 2:55 PM / by Andrew Taylor posted in SPE solid phase extraction, application, pesticide, epa method 508.1, epa method 608.3

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      “Pesticides” is one of those terms that invokes a wide range of emotions in people. Some people smile when they think of the insecticides that keep their award-winning flower garden looking beautiful all season.

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