Oxygen Cylinder Contents  Oxygen cylinder content ChatGPT As of my last update in September 2021, oxygen cylinders typically contain medical-grade oxygen, which is used for various medical purposes. The content of an oxygen cylinder is measured in volume and is usually expressed in liters. The most common sizes for medical oxygen cylinders are: Small portable cylinders: These are often used for ambulatory or home oxygen therapy and come in sizes like 2 liters, 3 liters, or 5 liters. Medium-sized cylinders: These are commonly used in healthcare facilities and have capacities ranging from around 20 liters to 40 liters. Large cylinders: These are heavy-duty cylinders used in hospitals and medical institutions, and their capacities can range from 50 liters to over 300 liters. The pressure at which oxygen is stored in these cylinders can vary depending on the type and size of the cylinder, but it is typically quite high to keep the oxygen in a gaseous state. Please note that regulations and standards may vary by country or region, and new developments might have occurred since my last update. It's essential to consult with a healthcare professional or medical supplier for the most up-to-date information on oxygen cylinders and their contents in your specific area.