His solution made him famous: Fehling's test

What was the use of Fehling's test?

As the very title of Fehling's essay suggests, determining the amount of sugar in the urine of diabetes patients was the first field where the new measurement method was applied. But Fehling's solution could also be used to determine the amount of sugar in the fields of engineering and food science. For instance, Fehling recommended that his solution be used to test for beet sugar, thus allowing quality tests to be carried out in the beet sugar industry, which was booming at the time. And, having become a citizen of Württemberg, Fehling also thought of testing for sugar in grape must ...