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1. The dynamic gas-mixing equipment based on obtaining gas mixtures by means of rheometers with calibrated capillaries can be recommended for calibrating and checking calibrations of commercial automatic gas analyzers used for determining the content of sulfur dioxide. 2. Commercial gas analyzers which have an error of 3–10% can be calibrated by means of the gas-mixing equipment without a thermostat, since room temperature vibrations in the range of 5–7°C have virtually no effect on measurement results.

The mixer described here can be recommended for the fabrication of two-component and multicomponent gas mixtures of specified composition containing virtually any gases whatever, over a wide range of concentrations (from 10%−3 in volume to 50% in volume). A blocking liquid which will not dissolve the component being metered in must be selected for the flowmeters in the case of chemically active gases. The mixer can be used to check out laboratory and industrial gas analyzers either under laboratory conditions or in the field.