File:Copy of Pasteur's flask used in his experiments on spontaneo Wellcome L0057281.jpg

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Copy of Pasteur's flask used in his experiments on spontaneo
Title
Copy of Pasteur's flask used in his experiments on spontaneo
Description

Louis Pasteur (1822-1895), the French chemist and microbiologist, used the original glass flask containing yeast water in his experiments on spontaneous generation. By 1864, Pasteur disproved this theory by experimenting with fermentation. He placed yeast water in a swan-necked flask (like this one) that only allowed air to enter. The water remained clear. Only when the flask was open to dust and micro-organisms did fermentation occur.

The flask has a handwritten label written by Pasteur reading “3 Août 1864, fevrier, eau de levure”. This translates from French as “3 August 1864, Febru-ary, yeast water”. This copy was made by the Institut Pasteur, possibly for exhibition purposes.

maker: Institut Pasteur

Place made: Paris, Ville de Paris, Île-de-France, France

Wellcome Images
Keywords: flask; Microbiology; Fermentation; micro-organism
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This file comes from Wellcome Images, a website operated by Wellcome Trust, a global charitable foundation based in the United Kingdom. Refer to Wellcome blog post (archive).
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References
  • Library reference: Science Museum A63395
  • Photo number: L0057281
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https://wellcomeimages.org/indexplus/obf_images/05/7e/13a08d079cb639ddda2176c19181.jpg

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