These test programs are designed to analyze precise multi-component, specialty gas mixtures (ex. calibration gas standards or blended gases) according to customer supplied specifications (ex.% to ppb level compositions). Sampling is done either directly from a customer supplied DOT cylinder or by renting small, high purity sampling cylinders and specialized transfill hardware accessories (ex. low-dead volume pressure regulators, transfer lines [plus special transfill instructions]) from ALI.