Currently, chemical measurements account for more than half of all measurements worldwide, and each chemical measurement is usually compared with its correspon...

Reference material is a kind of national standard measurement for measuring goods, which has been widely used in chemical measurement, biological measurement a...

Since the developed standard substances are continuously tested at low temperature, the purging gas is always on. In order to ensure the continuous supply of ...

Thermal analysis is a set of techniques to characterize the relationship between physical and chemical properties of materials and temperature or time. It has...

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 "mea...

Is a certified reference material a certified reference material? Before answering this question, it is important to understand the meaning of "certified refe...

The standard substances purchased by users are often of high concentration and cannot be used directly, so the quality control of these processes should be don...

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 "mea...

When testing with a standard solution instead of a sample, the result should be consistent with the known concentration of the standard solution. If the resul...