The AutoBlend is an integrated computer-controlled gas blending system designed to create flowing, adjustable-concentration complex gas mixtures and test atmospheres. The system introduces precisely controlled trace concentration components into a flowing, high purity matrix gas. The AutoBlend uses KIN-TEK Trace Source™ disposable, refillable and diffusion permeation tubes for over 500 chemicals. Permeation tubes are used as a controlled source of each trace level component.