Now try this:
As an experiment, take two small shot glass size amounts of milk..
Add 5 drops of Oxygen to one glass and leave un-refrigerated.
The milk with the oxygen will stay fresh 2-3 times longer and when it turns, it turns to a yogurt.
The other becomes rancid.
Useful for keeping milk in hot climates. Or if you just have too much milk to use right away.
It also shows Aerobic Oxygen works.