Solid Phase Extraction – Perceptions and Misconceptions

I was at a tradeshow the other day and overheard a conversation that stayed with me. The conversation was taking place between two colleagues who were reminiscing about their days in the college chemistry lab.

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Tuesday Trivia – July 31, 2018

It’s Tuesday again – ready to Expand Your Horizon?  For those who are joining us for the first time, every Tuesday is Trivia Tuesday where we test our wits on various topics.  We welcome all reasonable – as well as creative – guesses!

The Tuesday Trivia question for this week:

Imagine shrinking the Earth’s water supply down to 100 liters.  The volume of fresh, usable water would be roughly  _____(fill in the blank)_____ liters.

Keep an eye out for the answer next Tuesday …


Disks or Cartridges – Which Should I Use?

Has anyone been setting up their lab to prepare their samples via solid phase extraction and paused to consider whether you should be using SPE disks or SPE cartridges? Don’t be shy – I’ve asked this question on more than one occasion and it is a valid inquiry.  If you are familiar with SPE (check out one of my recent blogs if you need a refresher), you know that the chemistry involved in your application will be the same, as long as you are using the same media (or stationary phase).

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Tuesday Trivia – July 17, 2018 Answer

For those who saw last week’s Tuesday Trivia post, read on for the answer  you’ve been waiting for.

For those who are unfamiliar with these posts, every other Tuesday, a trivia question will be posted to allow us to test our wits and expand our horizons.

As a reminder, the question that was posed last week:  Cucumbers and _____(fill in the blank)_____ both consist of 95% water.


Believe it or not, jellyfish are basically a nervous system and a digestive system with tentacles. As they lack bones, blood, a heart, a brain and many other muscles and organs, they require water to survive and water currents to transport them.

For a jellyfish, water is a crucial component for their survival. While humans don’t require water for our daily movements and transport, it is crucial for our survival as well.  Click here to learn more.

Stay tuned for a new trivia question next week.  In the meantime, wrack your brain for your best trivia questions and send them to me in the comments section.  We’re eager to expand our horizons!

Solid Phase Extraction – What is That?

“Good data out requires good data in”.

I have heard many versions of that phrase over the course of my career. The statement could apply to a wide range of topics; however, as a chemist, the basic premise highlights to me the importance of proper sample preparation before analysis.

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