What is the safe oxygen level range?

The safe oxygen level range is crucial for ensuring the safety and health of individuals in a variety of environments, especially those that may involve confined spaces or areas where air quality is a concern. The correct range of 19.5% to 23.5% reflects the acceptable levels of oxygen needed for humans to function effectively without risk of hypoxia or oxygen toxicity.

At a minimum of 19.5%, oxygen levels are sufficient for normal human operation and mental clarity, while levels above 23.5% can potentially lead to increased fire hazards and physiological effects. This range represents a safe environment where individuals can work without adverse health effects related to oxygen levels.

When oxygen concentration drops below 19.5%, individuals may experience symptoms of oxygen deficiency, which can lead to impaired cognitive function and increased risk of accidents. Conversely, exceeding 23.5% can introduce risks associated with enhanced flammability of materials, which could compromise safety in various occupational settings. Thus, this choice encapsulates a well-understood standard for ensuring both safety and health in environments where oxygen levels can fluctuate.