It is applicable in the industry such as electrical power, coal, commerce inspection, environment protection, metallurgy, papermaking, petrochemical, earth probe, and the research institution or quality inspecting organization to measure the sulfur content in the materials of coal, cinder, coke, catalyst, minerals, rock, and petrochemicals. Features: Test with Coulometry. Automatically and continuously delivering, measuring, and testing the samples, automatically store the results and print out. 24 samples every time and 5 min a sample.