Put on all equipment needed to survive in water.
Put rubber tubes in both of the holes
Put test tubes over both openings of the tubes to capture the gas.
Now put the rubber stops (without holes) over the test tubes to prevent the gas from escaping .
Take to the laboratory for testing.
Put rubber tubes in both of the holes
Put test tubes over both openings of the tubes to capture the gas.
Now put the rubber stops (without holes) over the test tubes to prevent the gas from escaping .
Take to the laboratory for testing.
