Tales of Chemists:
The Amino Acid Story
"I needed the specificity of ion exchange with the speed of prederivatization HPLC methods': "Ion exchange is really specific for analyzing amino acids in complex samples like cell culture media. T h e problem is that it's just too slow. So I investigated prederivatization HPLC. It was faster, but now I had interferences to contend with. Not to mention all the time I ended u p spending on sample preparation. " T h e other day I finally discovered the best of both worlds. It's called Dionex. Now I get fast analysis, excellent specificity and reproducibility, with precious little sample prep. Most of the time I just dilute, filter, and inject. "Also, with column switching I can use my Dionex to analyze organic acids, carbohydrates, organic amines, and inorganic ions." PO. Box 3603, Sunnyvale, CA 94088-3603 (408) 737-0700 CIRCLE 4 3 ON READER SERVICE CARD
Cell Culture Medium
Minutes
DIONEX T H E ION E X P E R T S
