The following provides information on the sample preparation and samp領(lǐng) methods for the determination of carbon, sulfur, oxygen nitrogen and hydrogen in steel. The samp領(lǐng) methods and preparations introduced here are typical. Other methods may be applied if they are proper and suitable. 紅外碳硫分析儀（EMIA-920V2系列） 紅外碳硫分析儀（EMIA-320V2） 紅外碳硫分析儀 氧氮分析儀