Running samples on any chromatography instrument involves sample preparation as a fundamental process. For even the highest quality instruments, sample clean-up is crucial in obtaining the best ...
When choline chloride and urea--both solids--are mixed together in a molar ratio of 1:2, a liquid mixture is formed that freezes at 12 C. As pure compounds, choline chloride ([HOCH 2 CH 2 N(CH 3) 3] + ...
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