The definition of standard goods and standard substances exists only in our country, and there is no distinction abroad. The international standard Material and standard sample English name are "Reference Material". In our country, different fields have different names, standardization workers will be called "standard sample", referred to as "standard sample". Metrology workers call it "standard material", referred to as "standard object". So what is the difference between a national standard material and a national standard sample? The following is a small edition of Bolinda to introduce you.

The difference between national standard material and national standard sample:

1. Definition

The so-called national standard material is a substance or material that has been determined to have one or more sufficiently uniform characteristic values, which is used as a "measuring tool" in the analytical measurement industry to calibrate measuring instruments and devices, evaluate measurement analysis methods, measure the characteristic values of substances or materials and assess the operational technical level of analysts. As well as in the production process of product quality control and other fields play an indispensable role.

National physical standards are also standard samples referred to as standard samples or physical standards. It is developed according to the need of implementing and formulating the character standard. As a supplement to the character standard, the material is a kind of standard material agent of the Institute of Chinese Medicine standards.

2. Code name

Standard material: GBW primary standard material GBW(E) secondary standard material

Standard sample: GSB

3. Preparation process

Standard sample: The preparation of standard sample must go through the steps of preparing materials, testing the uniformity of finished materials, setting values, stability testing, packaging, review, approval, and release.

Standard material: The standard material completion process is basically the same as that in the standard sample, but the requirements are higher.

4. Use

Standard samples are developed for the implementation and development of standards, generally only in the scope of the standard involved in the use, it is a physical standard (relative to text standards) can not be used as a measurement of the transfer.

The standard material is a measurement standard, which can be used as a measurement transfer, used to calibrate instruments, evaluate measurement methods, and determine the quantity value of materials, as long as it is suitable, it can replace the standard sample in the formulation and implementation of standards.

The above content is the introduction of the difference between the national standard material and the national standard sample, for the standard sample/standard material with accurate characteristic value, its development procedure is the same, and the internal quality requirements are the same; For users, its role is the same, are as a standard, the difference is that the management procedures are different, respectively belong to different management agencies for classification, classification management.