Issue Date: May 24, 2010
Frees' Work Garners Landmark Status
The American Chemical Society recently honored the scientific fruits of the extraordinary partnership of Helen M. and Alfred I. Free as its 66th National Historic Chemical Landmark. The designation marked the Frees' 1956 development of Clinistix, the first dip-and-read diagnostic test strips for monitoring glucose in urine. Ceremonies were held on May 1 in Elkhart, Ind., where the couple spent their careers at Miles Laboratories and Bayer HealthCare.
Invention of the test strips, still marketed . . .
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