Solid phase extraction is a powerful technique – it can be used to clean up the most challenging samples, and extract and preconcentrate hundreds of semivolatile organic compounds. When performing the extraction, the goal is to get the entire sample to run through the extraction disk. But in order to do that, the disk must have the chemical and physical capacity to handle your sample matrix. If your disk becomes overwhelmed or clogs, you risk losing your sample and the chance to complete your extraction.
How do you prevent the disk from clogging? Prefilters!
Continue reading The Secret to Tackling Dirty Samples – Tips & Tricks for Filtering
It is easier to understand something when you know what the actual word means. Thermistor is a portmanteau (yes, sometimes I do pay attention to linguistics) of the words thermal and resistor. This means that when a thermistor is heated, its resistance is either increased or decreased based on the properties of that particular thermistor. This property makes it very useful for many different applications all over the world. But thermistors are most useful, at least from my perspective, when they’re used in automated solid phase extraction systems.
Continue reading What does a thermistor do anyway?
New year – fresh start
If you’re like me, you start the new year off with a list of resolutions for the coming months – resolutions to be more fit or to secure a promotion at work or to reduce your carbon footprint. Whether you’re trying to improve your health or further your career, these are the types of goals that I like to refer to as getting “back to basics” because they require you to start with a solid foundation which you can build on to achieve success.
Continue reading The Chemistry of SPE