Category: Industry dynamic

Gas standard samples and gas standard substances (hereinafter referred to as standard gases), as a physical standard and measurement benchmark, are widely used in scientific research, environmental testing, medical and health, petrochemical, chemical fertilizer, electric power, coal, metallurgy, machinery and other national economies. of various fields. Standard gas has played an extremely important role in calibrating…

1. Inspection of the uniformity of the mixed gas standard sample The degree of uniform mixing of the standard gas will directly affect the accuracy of its component content. For this reason, the prepared standard gas must be homogenized. The prepared steel cylinder was placed on the rolling device and rolled for 2 hours to make it…

1. Standard gas waste gas treatment has the following four methods: 1. Adsorption method Adsorption method is also called dry method, which uses solid absorbent to adsorb harmful components in gas. There are many kinds of adsorbents due to the different components of the absorbed gas, such as porous activated carbon, alumina gel, silica gel, diatomaceous earth, etc. …

Weighing method is a classic method for international and domestic standard gas preparation. In the past, a precision mechanical balance was usually used as a preparation tool for standard gas, and a set of relatively mature methods for the evaluation and calculation of uncertainty in the weighing process of the balance has also been established. In recent…