Shimadzu TOC History

Shimadzu TOC analyzerIt can detect various elements such as Si, Mn, P, Cr, Ni, Mo, Cu, Ti in various materials including plain carbon steel, low alloy steel, high alloy steel, cast iron, ductile iron, and alloy cast iron. Each element can store 99 working curves, controlled by a branded computer microcomputer, and operated in full Chinese menu style. It can meet the needs of multi-element analysis of materials in industries such as metallurgy, machinery, and chemical engineering in terms of furnace front, finished products, and incoming material testing.

Shimadzu TOC analyzerOverview

Not only is the wavelength continuously and automatically adjustable, but the accuracy has also been greatly improved, from the wavelength error of traditional element analyzers, which is generally 20nm (± 5nm), to the current 3nm. Therefore, the product can expand its application range while improving the accuracy of analysis and detection. It can detect various elements such as Si, Mn, P, Cr, Ni, Mo, Cu, Ti in various materials including plain carbon steel, low alloy steel, high alloy steel, cast iron, ductile iron, and alloy cast iron. Each element can store 99 working curves, controlled by a branded computer microcomputer, and operated in full Chinese menu style. It can meet the needs of multi-element analysis of materials in industries such as metallurgy, machinery, and chemical engineering in terms of furnace front, finished products, and incoming material testing.

Shimadzu TOC analyzerprinciple

Eliminating the influence of factors such as weight, sample uniformity, heating rate *, and differences in atmosphere pressure and flow rate, the correspondence between TG and DTA/DSC curves is better. It is helpful to distinguish the physical and chemical processes corresponding to a certain thermal effect based on whether it corresponds to a mass change (such as distinguishing melting peaks, crystallization peaks, phase transformation peaks from decomposition peaks, oxidation peaks, etc.). Knowing the current actual mass of the sample at the reaction temperature is beneficial for accurate calculation of the reaction enthalpy.

How to choose a thermal analyzer

Thermal analyzer is a type of instrument that measures the relationship between the physical properties of a substance and temperature by using a program to control the temperature. Currently, it has been widely applied in many fields such as production experiments. Most customers are confused when choosing a thermal analyzer and do not know how to choose the appropriate model for themselves. Let's briefly introduce some parameters of the thermal analyzer.

Firstly, we know that a thermal analyzer measures the relationship between many physical and chemical properties of a substance and temperature. So the temperature it can reach is one of our top concerns. Most of the thermal analyzers on the market are around 1000 degrees Celsius. But there are also differences here. The required temperature varies for different materials of the tested items. *The material of glass is mostly silicon dioxide, and its melting point is generally around 1200 ℃. Therefore, it requires temperatures around 1250 ℃ or even higher. But for some rocks with relatively low temperature requirements, such as calcium carbonate and calcium sulfate, most of them have a temperature of around 800 ℃, and 1000 ℃ is sufficient.

Secondly, what type needs to be selected. There are roughly three types in the market: differential heat type, heavy heat type, and comprehensive type. The differential thermal type can measure parameters such as thermal differential temperature, sensitivity, and range. Thermogravimetric analysis can be used to measure factors such as thermogravimetric temperature, sensitivity, and measurement range. The comprehensive type combines all the performance of the above two types and can measure the thermal gravimetric difference separately. When measuring different properties of samples, it is necessary to choose different types of instruments and consider cost-effectiveness. Relatively speaking, the comprehensive model has the highest cost-effectiveness and is also favored by many customers. Other methods, such as analytical methods, correspond to their differential heat type and heavy heat type. The differential thermal analysis method is generally DTA type, while the thermogravimetric analysis method is TG-DTG type.