A reference substance is a substance or material that has been determined to have one or more sufficiently uniform characteristic values, and 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 skills of analysts. As well as in the production process of product quality control and other fields play an indispensable role. So what are the properties of reference materials? Next, Bolinda Xiaobian will come and everyone under popular science.

What are the characteristics of the reference material:

1. Accuracy

Generally speaking, the standard material in the center of the standard material will give the standard value of the standard material and the uncertainty of the measurement at the same time, the general sources of uncertainty include weighing, instruments, uniformity, stability, some uncertainties generated between different laboratories and different methods, which need to be considered in them.

2. Uniformity

When we talk about uniformity, it is not difficult to understand that it is a state in which certain properties of matter have the same composition or the same structure. The precision of its measurement method, which is commonly known as the standard deviation, is used to measure the uniformity of the standard material. It is important to note that the precision is affected by the sample size, but the minimum sample size for the general uniformity test is generally provided in the standard material center.

3. Stability

Stability refers to the ability of a standard substance to control its characteristic value within a certain range under a specific environmental condition. This is also something we need to pay special attention to.

The above content is the introduction of what is the characteristics of the standard material, the value of the standard material is only related to the nature of the substance, and the number and shape of the substance has nothing to do with the standard material is the measurement standard with the correct value, it has been widely used in the field of chemical measurement, biological measurement, engineering measurement and physical measurement.