Category: Dynamic media

There are three methods of standard gas distribution: 1. Syringe gas distribution method When only a small amount of standard gas is required, a 100ML syringe can be used to prepare the standard gas; the required low-concentration standard gas can be obtained after multiple dilutions. The concentration of the standard gas can be calculated according to the…

In air and waste gas monitoring in environmental monitoring, standard gases are as important as standard solutions and standard substances, and are the basis for testing and testing methods, evaluating sampling efficiency, drawing standard curves, calibrating analytical instruments and conducting testing quality control. The method of preparing low-concentration standard gas is usually divided into: static gas distribution method…

The modern production process, from the inspection of raw materials, the control of the production process, to the inspection and evaluation of the final product quality, is inseparable from various instruments and meters. In order to ensure high-quality production, it is necessary to regularly use various standard gases to verify or calibrate its instruments, especially after…

1. Preparation of standard gas with lively properties Some gases are very active and easily react with oxygen and water packaging container materials to change the concentration. These gases were previously prepared in small quantities by methods such as ampoules and saturated vapor pressure, and are not suitable for long-distance transportation and long-term storage. In the…