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If you’re reading this and raising your eyebrows, you’ve never had, what I like to call, the “grade discussion.” I don’t mean the discussion between high school or college students who are comparing g...
If you are processing environmental samples then you’ve probably dealt with contamination at some point. If you haven’t, then you should be congratulated for creating the only laboratory on Earth that...
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 famil...
Believe it or not, we’re all familiar with emulsions. Have you ever added food oil to a pot of water while cooking? That’s an emulsion. Do you put dressing on your salad?
Have you ever wondered why solution flow rates are so important when performing sample preparation with solid phase extraction (SPE)? If you have, read on – I have the answer for you!
Have you ever had days of extracting oil and grease samples and thought to yourself “there must be an easier way to work with wastewater samples”? Whether you run oil and grease samples by liquid-liqu...
In the world of environmental testing, many labs encounter extremely dirty samples. For example, EPA Method 1664B is the protocol for extracting oil and grease from wastewater samples. More often than...
When I first saw EPA Method 549.2 only had two compounds, I said to myself: “WOW! That’s a breeze! Only two compounds to worry about, so it can’t be that difficult to extract!”
When you are extracting SVOCs from aqueous samples and analysing via Gas Chromatography (GC), every step within a solid phase extraction (SPE) procedure is imperative, but one of the most important st...
Testing for toxic organic contaminants in environmental samples often requires the following three sample preparation steps: 1) Extraction, 2) Concentration, and 3) Analysis. The goal during these thr...