GBW and GSB reference materials
reference material(GBW) andStandard sample(GSB) are all approved by the Standards Department of the International Technical Supervision Bureau and issued by the National Technical Supervision Bureau, but the reference materials are organized and reviewed by the National Standard Substances Management Committee, while the standard samples are organized and reviewed by the National Standard Samples Technical Committee.
The difference between GBW and GSB: different code names
The code name of the reference material is GBW:
The initials of "Guo", "Biao" and "Wu" in the Chinese pinyin "Guo Jia Biao Zhun Wu Zhi" of the national standard substance are expressed as the code name "GBW" of the national standard substance.
The code name for the standard sample is GSB.
The number of the national physical standard sample is the Chinese pinyin "Guo Jia Shi Wu Biao Zhun" in the national physical standard. The prefix of the three characters "Guo", Shi "and" Biao "is represented as the code" GSB "of the national physical standard.
Differences between GBW and GSB:Different definitions
Reference material:
A substance or material having one or more sufficiently homogeneous quantities and having a well-defined characteristic magnitude. Used to calibrate instruments, evaluate measurement methods, or determine the magnitude of a material; a standard sample:
It is a batch of samples with one or more chemical, physical, biological, engineering, or sensory performance characteristics that are sufficiently uniform, technically validated, and accompanied by a certificate of relevant performance data.
Differences between GBW and GSB:The difference between the preparation process
The preparation of standard samples requires the preparation of materials, the uniformity inspection, value determination, stability inspection, packaging, review, approval, release and other steps of the finished materials;
The preparation process of standard materials is basically the same as that of standard samples, but the requirements are much higher.
Differences between GBW and GSB:Different uses
Standard samples are developed for the implementation and development of standards, and are generally only used in the scope covered by the standard. They cannot be used for measurement transmission in physical standards (as opposed to literal standards).
Reference materials are metrological standards that can be used for metrological transmission to calibrate instruments, evaluate measurement methods, and determine the value of materials. They can be used instead of standard samples in formulating and implementing standards as long as appropriate.
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