Oxygen Levels

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• High -- Above 23.5%

• Normal -- 20.8% to 21%

• Low -- Below 19.5%

Dangers of High Oxygen Levels

• Increased combustibility of materials not normally combustible

• Long term exposure can cause Oxygen Toxicity

Dangers and Symptoms of Low Oxygen Levels

• 12% to 16% -- Causes deep breathing, increased heart rate, poor attention, and poor coordination

• 10% to 14% -- Faulty judgment, intermittent breathing, rapid fatigue, very poor coordination, cyanosis

• 6% to 10% -- Nausea and vomiting, loss of movement, loss of consciousness, death

• Below 6% -- Spasmodic breathing, convulsive movements, and death in approximately eight (8) minutes with coma in forty (40) seconds