Top Qs
Timeline
Chat
Perspective

Swan neck flask

Flask with a curved neck that traps particulate From Wikipedia, the free encyclopedia

Swan neck flask
Remove ads

A swan neck flask, also known as a gooseneck flask, is a round-bottom flask with a narrow s-shaped tube as its opening to reduce contact between the inner contents and external environment. The motion of air through the tube is slowed and aerosolized bacteria or other particles in the air tend to become trapped by moisture on the tube's inner surfaces. The contents of the flask thus remain free of microbes, a property showcased by French microbiologist Louis Pasteur in nineteenth century experiments used to support germ theory as the cause of fermentation over spontaneous generation from bad air (miasma).[1][2][3]

Thumb
Bottle en col de cygne (Swan neck bottle) used by Louis Pasteur
Thumb
Louis Pasteur's spontaneous generation experiment illustrates that liquid nutrients are spoiled by particles in the air rather than the air itself. These results of these experiments supported the germ theory of disease.
Remove ads

See also

References

Loading related searches...

Wikiwand - on

Seamless Wikipedia browsing. On steroids.

Remove ads