What is the normal working limit for HEO2 in the KM37?

The normal working limit for Helium-Oxygen (HEO2) mixtures in the KM-37 diving system is 300 feet of seawater (FSW). This is a crucial depth for divers as it represents a balance between maximizing operational depth while maintaining safety and minimizing the risk of oxygen toxicity and other potential physiological effects associated with high pressures and gas mixtures.

At this depth, the use of HEO2 becomes advantageous for reducing the narcotic effects of nitrogen, which can impair a diver's cognitive and motor functions. The strategic shift to helium as a primary gas helps divers operate effectively at considerable depths.

Understanding the implications of your gas choice and its effects at various depths is vital for safe diving practices. This limit is established based on extensive research and operational experience, ensuring divers can achieve their objectives while remaining within safe parameters.