scope:

This International Standard gives a list of all the criteria required to define a gas mixture supplied under pressure in a cylinder and to be used for calibration purposes. These criteria shall be declared by the producer of the gas mixture. The producer of the gas mixture for calibration shall supply two copies of the list of these criteria: a) in the form of a certificate delivered at the same time as the invoice for the corresponding gas cylinder; b) in the form of a label attached to, or fixed on, the gas cylinder.