Air Capacity

Type I Air Capacity   To calculate the amount of air held in a 370 ml cylinder at 300 bar, we need to use the formula:   Volume = (pressure x cylinder volume) / (gas constant x absolute temperature)   The gas constant for air is 0.0821 L·atm/(mol·K) and the absolute temperature is 273 + […]

Design Standards

Design Standards An important note for users to be aware of, is that currently there is no international standard for the design of swiftwater rescue breathing apparatus.  By default, a number of other standards and references are used to help inform good practice. These include: EN250:2014 Respiratory equipment – Open-circuit self-contained compressed air diving apparatus […]