Friedrich Heeren


Friedrich Heeren was a German chemist.
He received his doctorate in Göttingen, and from 1831 was an instructor of technological-chemical subjects at the Polytechnic School in Hannover. Here he taught classes in physics, mineralogy and chemistry.
With technologist Karl Karmarsch, he published a technical dictionary. Also, with Karmarsch, he developed a process for the preparation of gun cotton. In 1881 he introduced an apparatus for the testing of milk.