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Hufner's apparatus, c 1885.

Hufner's apparatus, c 1885.
4 0 c m
actual image size: 25cm x 32cm


Hufner's apparatus, c 1885. This apparatus was used for the estimation of nitrogen in urea ((NH2)2CO). Many organic substances were closely examined in the 19th century, but the synthesis of urea was a landmark in the understanding of life.

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