Oxygen-metering equipment, pressure-reducing regulators, humidifiers, and nebulizers are labeled with name of manufacturer or supplier
Oxygen-metering equipment and pressure reducing regulators are labeled "OXYGEN–USE NO OIL"
Labels on flowmeters, pressure-reducing regulators, and oxygen-dispensing apparatuses designate the gases for which they are intended
Cylinders and containers are labeled in accordance with Compressed Gas Association.