In Nitrox diving terminology, what role does the "blender" play?

The term "blender" in Nitrox diving refers specifically to the individual responsible for filling Nitrox cylinders with the appropriate gas mixtures. This role is critical because blending involves precise measurements to ensure that the correct proportions of oxygen and nitrogen (or other gases) are achieved in the mixture. Properly blended Nitrox is essential for safe diving practices, as varying the mixture can change the maximum operating depth and influence the risk of oxygen toxicity.

The blender must have a thorough understanding of gas blending techniques, safety protocols, and the functioning of blending equipment. Additionally, this person needs to be aware of the characteristics of the specific gases being used and comply with regulatory standards to avoid complications during diving. Without a skilled and knowledgeable blender, divers could face significant risks associated with improper gas mixes, affecting their safety underwater.