North Carolina EMT State Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

The oxygen capacity of an H tank is indeed 6900 liters. This large volume is one of the reasons H tanks are commonly used in emergency services and emergency medical systems. H tanks, or high-pressure oxygen cylinders, are designed to store oxygen at pressures around 2200 psi. Their capacity allows for extended use during critical situations when a significant amount of oxygen is needed to support patients with respiratory distress or during procedures requiring high-level oxygen supplementation.

It's important for EMTs and medical personnel to understand the capacity of oxygen tanks like the H tank to effectively manage resources in emergency situations, ensuring they have enough oxygen available for patient treatment and transport. Other tank sizes, such as E or D tanks, have significantly lower capacities, which is crucial to consider when calculating how much oxygen is available for a given patient or situation.