RoR on living organisms

    Cards (7)

      1. Pick a small organism to measure the RoR (maggots)
    • 2. Place 5cm cubed of soda lime into a test tube
    • 3. place the gauze on top and a a small amount of the organism on top of this
    • 4. Attach a three-way tap, capillary tube and syringe to the test tube. Plug the test tube with a stopper
    • 5. Insert a small amount of coloured liquid into the capillary tube
    • 6. Turn the 3-way tap to allow air to enter the test tube for 5 minutes. After 5 minutes close the 3 way tap.
    • 7. Record how far the liquid has moved against a scale
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