SCU, short for “Standard Cubic Unit,” is a unit of measurement used to quantify the volume of a gas at standard temperature and pressure. It is equivalent to one cubic meter of gas at a temperature of 0 degrees Celsius and a pressure of 1 atmosphere. This unit is commonly used in the fields of chemistry and physics to accurately measure the amount of gas present in a given space. The use of SCU allows for precise and consistent measurements, making it an essential tool in scientific research and experimentation.