Simple Respirometer

Product Code : SCL-BLE-12667

Simple Respirometer for comparing the rates of absorption or evolution of gases by small organisms, during respiration. The apparatus consists of two stoppered boiling tubes connected by three-way taps to either limb of a graduated manometer.

One tube holds the organisms and has a syringe connector for altering the level of liquid in the manometer during setting up.

The other tube acts as a control thermo barometer. The Carbon Dioxide given off by the respiring organisms is absorbed by Potassium Hydroxide in the experimental chamber resulting in a change in the level of liquid in the manometer tube.

• Complete with wire baskets for supporting organisms.
• Capillary Tube Diameter - 0.8mm (approx.)

Reasons to Love

• Easy to use and set up.
• The wire baskets support and protect the organisms being studied.

Learning Outcomes

• Evolution of carbon dioxide by organisms or fermenting yeast,
• Evolution of oxygen during photosynthesis (if used with Algae)

Top Tips

• Suitable living organisms include Woodlice, Locusts, Maggots (Yeast can also be used)
• Potassium Hydroxide can be purchased separately.