Preparation of internal control standard samples of medium carbon ferromanganese by infrared carbon and sulfur analyzer Experiments show that HW2000B infrared carbon and sulfur analyzer set, good melting the sample, the peak shape perfectly. A series of ferromanganese standards (including low-carbon ferromanganese and high-carbon ferromanganese) were selected for the gradient of carbon and sulfur content, and the method was established. A method for producing medium carbon manganese-iron carbon and sulfur internal standard samples by using carbon ferromanganese in industry. It solves the problem that the non-aqueous titration determines the standard sample and the large consumption of carbon and sulfur. Medium carbon ferromanganese is widely used in the steel industry. It is mainly used as an alloying additive and deoxidizer in the manufacture of welding materials. Carbon and sulfur are the main elements in the acceptance index. The analysis of carbon and sulfur currently uses two methods: high-frequency combustion - infrared absorption and tube furnace combustion - non-aqueous titration. The former has high accuracy, but the analysis cost is also high; the latter is a traditional method that can meet most analytical requirements. In the non-aqueous titration method, it is necessary to use a standard sample having the same carbon and sulfur content as the sample matrix. However, there are currently few standard samples available on the market, and the sulfur content is generally below 0.005% , which cannot meet the requirements. In this paper, the medium-carbon ferromolybdenum is used for screening and processing, and the internal standard of carbon-manganese-iron is prepared by using the infrared absorption legal value, which is applied to daily analytical requirements and has achieved satisfactory results. The self-made internal control standard samples are not only moderate in content, easy to calibrate, but also greatly reduce the cost of testing.  Test part Main equipment and tools Standard sample sieve: 80 mesh, 120 mesh Medium carbon ferromanganese powder: for production High temperature drying oven: QL-HW2000B type Infrared carbon and sulfur analyzer: Kirin  QL 1.2 Test methods Take medium carbon ferromanganese powder for production Degree selection , then passivation treatment in a dry box, and finally set in an infrared carbon sulfur analyzer, and dispensed in a jar.         For more product information, please visit the following website       High-frequency infrared carbon and sulfur analyzer http://       Infrared carbon sulfur meter http://       Elemental Analyzer http://       Multi-element analyzer http://       Spark direct reading spectrometer http:// Carbon and sulfur analysis instrument http://  Nanjing Qilin Scientific Instrument Group Co., Ltd. Testing Center