The weighing method is a classic method for preparing international and domestic standard gases. In the past, precision mechanical balances were usually used as standard gas preparation tools, and...

1. Preparation of lively standard gasSome gases are particularly active in nature and easily react with oxygen and water packaging container materials to cause changes in concentration. These gases...

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...

In air and waste gas monitoring in environmental monitoring, standard gases are as important as standard solutions and standard substances. They are the basis for testing and testing methods,...

There are three methods for standard gas distribution:1. Syringe gas distribution methodWhen only a small amount of standard gas is needed, a 100ML syringe can be used to prepare the standard gas;...

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....

1. Inspect the uniformity of mixed gas standard samplesThe uniformity of the standard gas will directly affect the accuracy of its component content. For this reason, the prepared standard gas must...

Gas standard samples and gas standard materials (hereinafter referred to as standard gases) as a kind of physical standards and measurement standards are widely used in scientific research,...

1. General rules for standard gas preparationThe development process of standard gas can be divided into four steps: purity analysis of raw material gas; composition pressure preparation by...

Standard gas is an industry term for leading gas, and standard gas is a standard substance. Standard materials are highly uniform, stable and accurate measurement standards. They have the basic...

Precautions for standard gas in sampling:The particularity of the standard gas has special requirements for sampling. Many users have large data deviations due to non-standard sampling. Here I...

To keep the content of the components in the standard gas and mixed gas basically unchanged for a long time, the choice of packaging container material and the processing technology of the inner...

Standard gases and mixed gases are widely used in basic science, air pollution, medical diagnosis, petrochemical industry, metallurgical geology, atomic energy, microelectronics, optoelectronics...