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Lab-Aids® Investigating Human Respiration Kit
803S 803S-RC
470024-332EA 111 USD InStock
470024-332 470024-330
Lab-Aids® Investigating Human Respiration Kit
Educational Materials Biology Educational Materials Human Biology Learning Activities
Explore the role Of respiratory system in regulation of blood gases.

  • Creating models is one way to understand and communicate scientific information
  • Examine human respiration
  • Time required: one to two 50 minutes class periods
Using bromothymol blue (BTB) as an indicator, students conduct a qualitative investigation. The amount of carbon dioxide in their exhaled breath is then quantitatively measured using the indicator to perform a simple titration. The combination of these steps demonstrates the function of the lungs in providing surface area for oxygen to enter and carbon dioxide wastes to leave the blood.

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