Manganese-phosphorus silicon analyzer is an electro-optical colorimetric analyzer for rapid analysis of manganese, phosphorus and silicon in steel and its alloys (such as pig iron, cast iron, ductile iron, carbon steel, alloy steel, stainless steel, etc.) . Based on the advanced technologies at home and abroad, the Manganese-Phosphorus Analyzer adopts advanced technologies such as “Intelligent Dynamic Tracking†and “Non-linear regression of the standard curve†for the first time, enabling the daily adjustment of traditional colorimeters and the establishment of standard curve. The method has undergone fundamental changes. Manganese phospho-silicon analyzer can store multiple test curves internally, and can freely input, delete, and change various coefficients as needed, and repeatedly perform regression processing, so that the establishment of the standard curve can be completely digitized and formulated, free from manual establishment. The traditional curve backward method, the test results digital read directly, automatically print test reports. Manganese-phosphorus silicon analyzer adopts the latest cold light source technology, which completely changes the shortcomings of poor stability and large drift of the heat source (bulb). The manganese-phosphorus silicon analyzer circuit adopts the latest imported large-scale integrated chip, high-precision, high-speed digital-to-analog converter, Ensure the precision and stability of the instrument.