In the Roman numeral classification system, what do smaller numbers indicate?

In the Roman numeral classification system, smaller numbers indicate a higher hazard. This system is commonly utilized to communicate the level of risk or dangers associated with various materials or substances, particularly in the context of fire safety and flammability. A lower Roman numeral signifies a greater level of danger, requiring more stringent safety precautions and handling measures.

For example, a numeral I might represent a significant hazard, while a numeral IV would indicate a lower level of concern. Understanding this classification is crucial for laboratory safety, especially when working with flammable gases, as it helps personnel quickly assess the risks and implement appropriate control measures.