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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 pe...

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...

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 ...

It is easier to understand something when you know what the actual word means. A thermistor is a portmanteau (yes, sometimes I do pay attention to linguistics) of the words thermal and resistor. This ...

Phenolic compounds can be some of the most challenging compounds to extract from the compound lists in EPA Method 8270 and EPA Method 625.1. The recovery of these compounds suffer tremendously compare...

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.

It is question and answer time and we are starting with TurboVap® evaporators and their use in an environmental lab. The TurboVap® evaporation system by design utilizes a patented gas vortex shearing ...

When working in a contract lab or any analytical testing lab, you may be prone to periods where it seems like there is never going to be a light at the end of the tunnel, as the samples just keep on c...

Since its release in 1995, EPA method 525.2 has been one of the most widely used methods for quantifying semi-volatile compounds in drinking water. Chances are, if you work for or own a drinking water...

Per- and polyfluoroalkyl substances (PFAS) are a group of harmful organic compounds that are very persistent in structure. What this means is PFAS compounds accumulate in the environment over time as ...