Huff and puff apparatus

Huff and puff apparatus

The huff and puff apparatus is used in school biology labs to demonstrate that carbon dioxide is a product of respiration. A pupil breathes in and out of the middle tube. The glass tubing is arranged in such a way that one flask bubbles as the pupils breathes in, the other as the pupil breathes out. A suitable carbon dioxide indicator, such as lime water or bicarbonate indicator shows the increased presence of carbon dioxide in the outgoing breath.This turns the bicarbonate into milky white substance.

ee also

* Respiration (physiology)


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Huff — or huffing may refer to: * Huff (TV series), a Showtime television program * Huff (board games) * Huff and puff apparatus * Huff Duff (HF/DF) High Frequency Direction Finder * Huff Daland Aero Corp * The use of an inhalant.People named Huff*… …   Wikipedia

  • Respiration (physiology) — In animal physiology, respiration is the transport of Oxygen from the outside air to the cells within tissues and the transport of carbon dioxide in the opposite direction. This is in contrast to the biochemical definition of respiration, which… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”