What equipment modifications may be necessary when diving with EANx?

When diving with Enriched Air Nitrox (EANx), it is essential to consider the oxygen content and its effects on diving equipment. The correct answer emphasizes the necessity of using O2-compatible regulators and tanks. This is crucial because EANx contains a higher percentage of oxygen than regular air, which can lead to the risk of oxygen toxicity if the equipment is not appropriately rated for higher oxygen levels.

Standard equipment may not be suitable for long-term exposure to higher oxygen concentrations, as they can undergo deterioration or malfunction. Therefore, using O2-compatible materials for both regulators and tanks helps ensure safety and reliability while diving with EANx.

Choosing specific equipment that is designed to handle higher oxygen levels is critical to prevent potential accidents that may arise from equipment failure. The other options do not address the fundamental requirement of ensuring all equipment is safe for use with EANx, which is a key consideration for divers undertaking this type of diving.