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摘要

Available from Alytech, France the LiqMix Cascade is an accurate, automated, cost effective way for on-site generation of gas standards for chemicals that are not commercially available in cylinders, such as unstable, reactive compounds in complex multicomponent mixtures. Calibration gas such as BTEX in air, other hydrocarbons, acetone, siloxanes, ethanol and phenol, humidity standards can be produced in your lab tailored to your needs. This innovative multi-stage cascade dilution system can generate a standard gas from pure liquids or liquid mixtures in wide concentration range from % down to ppb with good accuracy, high repeatability, and full traceability. This makes the LiqMix Cascade a simple and reliable metrology tool to perform multi-point calibrations, linearity, and hysteresis checks, LOQ / LOD validation of gas sensors, GC or GC/MS systems and many other purposes. Liquid micro flow is delivered into a vaporizer precisely measured by Coriolis massflow controller where it injected into a flow of a carrier gas (air, N_2, H_2, He, ...). The Coriolis technology is virtually independent of liquid properties (temperature, density, conductivity, and viscosity) and can handle any liquid or liquid mixture without a need for a specific calibration very accurately.