In the fields of chemical analysis, biomedicine, environmental monitoring, and materials science, dual beam UV visible spectrophotometers have become the core laboratory instruments due to their high-precision and high stability spectral analysis capabilities. It effectively eliminates light source fluctuations and environmental interference through dual beam real-time compensation technology, providing reliable data support for quantitative analysis, dynamic research, and material structure analysis.

UV visible spectrophotometer is a widely used analytical instrument in laboratories, used to measure the absorption characteristics of substances in the UV and visible light bands. Among them, the dual beam UV visible spectrophotometer has become an important tool in scientific research and industrial testing due to its high accuracy, stability, and wide range of applications. This article will provide a detailed introduction to its working principle, technical characteristics, advantages, and applications in multiple fields.

Accurate measurement of material density is a requirement in many fields of modern scientific research and industrial production. Electronic density balance, as a precision instrument that combines modern electronic technology and classical physical principles, is widely used in multiple industries such as materials science, chemical engineering, food, and pharmaceuticals due to its high precision, high efficiency, and easy operation.

In the field of modern analytical chemistry, gas chromatography-mass spectrometry (GC-MS) is a powerful analytical tool widely used in various fields such as environmental monitoring, food safety, drug development, petrochemicals, and forensic science. It combines the efficient separation capability of gas chromatography with the high sensitivity identification capability of mass spectrometry, enabling rapid and accurate qualitative and quantitative analysis of compounds in complex mixtures.

When Archimedes of ancient Greece shouted "Eureka" in the bathtub, he simply put his crown into the water to measure its volume; Today, engineers placed 0.1 g of PEEK microspheres into an electronic density balance and were able to simultaneously read mass, volume, density, porosity, and even infer the pore defects after 3D printing within 30 seconds. This seemingly ordinary electronic balance is actually a "soul scale"‐ — It refers not only to weight, but also to the 'internal order' of materials.

In the initial tea production workshop of Pu'er tea in Yunnan, tea makers put freshly picked leaves into a halogen moisture meter. After 3 minutes and 15 seconds, the instrument display screen showed the precise data of "moisture content 78.2%". This value directly triggers the parameter adjustment of the rolling machine—

Electrochemical mass spectrometer is an advanced analytical instrument that combines electrochemical reactions with mass spectrometry analysis, widely used in various fields such as electrocatalysis, battery research, electrochemical corrosion, etc. It provides important support for the study of electrochemical reaction mechanisms by real-time monitoring of gas products and intermediates generated during the electrochemical reaction process.