The Role of Standard Gases

(1) Establish a traceable gas standard material for measurement, which has good uniformity and stability, can preserve the chemical composition and characteristic quantity value of the substance, and transfer its quantity value in different space and time. Therefore, the measurement traceability of various actual measurement results can be obtained through the application of standard gases.

(2) The transfer of quantity value Standard gas is a means to carry out the transfer of quantity value and achieve accurate and consistent measurement results. Through different grades of standard gases, the instrument transmits the quantity value of the basic units of the International System of Units to the actual measurement to ensure the accuracy of the measurement results.

(3) To promote the development of measurement technology and quality supervision work, standard gas plays an important role in ensuring the consistency of product quality and inspection results, and ensuring the scientific, authoritative and impartial technical supervision work. In the identification of new instruments, the metrology certification of quality inspection institutions, laboratory accreditation, the formulation, verification and implementation of national and industrial gas product standards are inseparable from standard gases.

(4) Ensure accurate and consistent measurement results Standard gas can be used to calibrate or verify measuring instruments, evaluate the quality of the measurement process and various measurements, so as to ensure the consistency of different time and space measurements.

Common Uses of Standard Gases

(1) For building home environment monitoring

With the improvement of people's living standards, people have higher and higher requirements for building home decoration, and harmful substances in indoor building decoration materials must be strictly controlled and accurately detected, such as benzene, formaldehyde, ammonia and so on. To accurately determine the content of harmful gases in the home environment, it is necessary to have the corresponding standard gas to calibrate the instrument.

(2) For atmospheric environmental pollution monitoring

With the increasingly serious environmental pollution, the problem of controlling environmental pollution is imminent. All countries have formulated environmental protection laws, environmental standards and the maximum allowable concentration of hazardous substances in the atmosphere in the residential area. Therefore, the monitoring and control of environment and the evaluation of air pollution are more important. In order to ensure the accuracy of monitoring and the effectiveness of management, it is necessary to regularly calibrate and monitor all kinds of instruments with accurate and reliable standard gas values.

(3) For instrument inspection and calibration

The modern production process, from the inspection of raw materials, the control of the production process, to the final inspection and evaluation of product quality, can not be separated from various types of instruments. In order to ensure efficient and high-quality production, it is necessary to regularly use a variety of standard gases to verify or calibrate its instruments, especially after long-term use or repair of online instruments, it is necessary to use standard gases to calibrate the scale.

(4) For medical and clinical tests

In recent years, China's standard gases have begun to be used in medical and clinical tests, such as blood gas analysis, lung function determination, bacterial culture, respiratory metabolism determination, radioactive tracer, surgical laser surgery, pregnant women and so on.

(5) For gas product quality control

In order to ensure that the quality of the gas products produced meet national standards or industry standards, the daily supervision and inspection of the products must be fixed, and most gas analysis instruments are relative measuring instruments, and standard gases must be used as quantitative standards to ensure the accuracy of the measurement results.