With the development of science and the advancement of production technology, the quantitative analysis of moisture has been listed as one of the basic items for physical and chemical analysis of various substances, and it is an important quality indicator of various substances. Different requirements for the determination of moisture were proposed according to the different moisture contents in the different types of samples. Moisture measurement can be industrial production control analysis, or the signing of the quality of industrial and agricultural products; moisture can be measured from tons of product, and only a few microliters of test solution can be used for moisture analysis in the laboratory; A constant moisture analysis of several to several tens of tens of thousands of water, or a trace moisture analysis with a water content of only one millionth or less.
Water analysis methods can generally be divided into two major categories, namely physical analysis and chemical analysis. The classical moisture analysis method has been gradually replaced by various moisture analysis methods. Currently, the main moisture analyzers on the market are Karl Fischer moisture analyzer, infrared moisture meter, dew point moisture meter, microwave moisture meter, and Coulomb moisture meter. And some special moisture meters. These instrument determination methods are simple, sensitive, and reproducible, and can be continuously measured and automatically displayed.
Foreign moisture analyzers have certain advantages in terms of accuracy, stability, etc., but they are expensive, and they cannot be afforded by some domestic laboratories and enterprises. In recent years, many domestic instrument manufacturers have strengthened the research and practice of moisture analyzers, and have achieved very significant benefits, bringing the various technologies of domestic moisture analyzers closer to international standards and meeting the needs of general laboratories and enterprises.
The Karl Fischer method is a classical method, which has been improved in recent years, greatly improving the accuracy and expanding the measurement range. It has been listed as a standard method for moisture determination in many substances. In recent years, the imported Karl Fischer moisture analyzers which are relatively active in the domestic market include France Reyes, Metrohm Switzerland, Germany METTLER TOLEDO, Germany SCHOTT, Japan Kyoto Electronics, and domestic Karl Fischer moisture analyzers. Haidian Chaosheng, pioneer Wei Feng, Jiangsu Jianghuan Analytical Instrument Co., Ltd.
The infrared moisture analyzer is simple in operation, less time-consuming, and accurate in measurement results. Therefore, the infrared moisture meter can be widely used in laboratory analysis, daily stock control, and process detection in chemical, pharmaceutical, food, food, food, and other industries. Major manufacturers include the United States Omnimark, the United States Fisher, the United States Raytek, the United States omnimark, Germany Sartorius, Japan Kett, Zhiqiao Keyi, Shanghai Precision Scientific Instruments Corporation, the Nuclear Industry Beijing Institute of Chemical Metallurgy, Beijing Jiuru Instrument Co., Ltd. and so on.
The dew-point moisture analyzer is easy to operate, the instrument is not complicated, and the measured results are generally satisfactory. It is often used for the determination of trace moisture in permanent gas. However, this method has more interference, and some cold-changeable gases, especially at higher concentrations, will interfere with condensation than water vapor. Manufacturers include Shaw, UK, AMETEK, and others.
Coulomb moisture meters are often used to determine the moisture content of gases. This method is easy to operate, quick to respond, and especially suitable for the determination of trace moisture in gases. If you use ordinary chemical methods, it is very difficult. However, electrolytic methods are not suitable for the determination of alkaline substances or conjugated diolefins. Manufacturers include Chengdu Instrument Factory, Jiangsu Jianghuan, and Daqing Rishang Microwave Moisture Analyzer using microwave field drying samples to speed up the drying process. It has the advantages of short measurement time, easy operation, high accuracy and wide application range. The determination of moisture in granular, powdery, and viscous solid samples such as grain, paper, wood, textiles, and chemical products can also be applied to the determination of moisture in petroleum, kerosene, and other liquid samples. Manufacturers include United States CEM Corporation, United States Omnimark Corporation, Changsha Youxin Corporation.
In addition, some dedicated moisture analyzers have become increasingly prominent in the market. This moisture analyzer has the advantages of specificity, simple operation, etc., and is widely used for on-line control and analysis of industrial production. The quality of industrial and agricultural products is checked. Ding, such as oil moisture analyzer, soil moisture analyzer, ** moisture analyzer, grain moisture analyzer, wood moisture analyzer, concrete moisture analyzer, paper moisture analyzer and so on.
Water analysis methods can generally be divided into two major categories, namely physical analysis and chemical analysis. The classical moisture analysis method has been gradually replaced by various moisture analysis methods. Currently, the main moisture analyzers on the market are Karl Fischer moisture analyzer, infrared moisture meter, dew point moisture meter, microwave moisture meter, and Coulomb moisture meter. And some special moisture meters. These instrument determination methods are simple, sensitive, and reproducible, and can be continuously measured and automatically displayed.
Foreign moisture analyzers have certain advantages in terms of accuracy, stability, etc., but they are expensive, and they cannot be afforded by some domestic laboratories and enterprises. In recent years, many domestic instrument manufacturers have strengthened the research and practice of moisture analyzers, and have achieved very significant benefits, bringing the various technologies of domestic moisture analyzers closer to international standards and meeting the needs of general laboratories and enterprises.
The Karl Fischer method is a classical method, which has been improved in recent years, greatly improving the accuracy and expanding the measurement range. It has been listed as a standard method for moisture determination in many substances. In recent years, the imported Karl Fischer moisture analyzers which are relatively active in the domestic market include France Reyes, Metrohm Switzerland, Germany METTLER TOLEDO, Germany SCHOTT, Japan Kyoto Electronics, and domestic Karl Fischer moisture analyzers. Haidian Chaosheng, pioneer Wei Feng, Jiangsu Jianghuan Analytical Instrument Co., Ltd.
The infrared moisture analyzer is simple in operation, less time-consuming, and accurate in measurement results. Therefore, the infrared moisture meter can be widely used in laboratory analysis, daily stock control, and process detection in chemical, pharmaceutical, food, food, food, and other industries. Major manufacturers include the United States Omnimark, the United States Fisher, the United States Raytek, the United States omnimark, Germany Sartorius, Japan Kett, Zhiqiao Keyi, Shanghai Precision Scientific Instruments Corporation, the Nuclear Industry Beijing Institute of Chemical Metallurgy, Beijing Jiuru Instrument Co., Ltd. and so on.
The dew-point moisture analyzer is easy to operate, the instrument is not complicated, and the measured results are generally satisfactory. It is often used for the determination of trace moisture in permanent gas. However, this method has more interference, and some cold-changeable gases, especially at higher concentrations, will interfere with condensation than water vapor. Manufacturers include Shaw, UK, AMETEK, and others.
Coulomb moisture meters are often used to determine the moisture content of gases. This method is easy to operate, quick to respond, and especially suitable for the determination of trace moisture in gases. If you use ordinary chemical methods, it is very difficult. However, electrolytic methods are not suitable for the determination of alkaline substances or conjugated diolefins. Manufacturers include Chengdu Instrument Factory, Jiangsu Jianghuan, and Daqing Rishang Microwave Moisture Analyzer using microwave field drying samples to speed up the drying process. It has the advantages of short measurement time, easy operation, high accuracy and wide application range. The determination of moisture in granular, powdery, and viscous solid samples such as grain, paper, wood, textiles, and chemical products can also be applied to the determination of moisture in petroleum, kerosene, and other liquid samples. Manufacturers include United States CEM Corporation, United States Omnimark Corporation, Changsha Youxin Corporation.
In addition, some dedicated moisture analyzers have become increasingly prominent in the market. This moisture analyzer has the advantages of specificity, simple operation, etc., and is widely used for on-line control and analysis of industrial production. The quality of industrial and agricultural products is checked. Ding, such as oil moisture analyzer, soil moisture analyzer, ** moisture analyzer, grain moisture analyzer, wood moisture analyzer, concrete moisture analyzer, paper moisture analyzer and so on.