Various CRMs are used to check the linearity and precision of high and low content nitrogen channels on the analyzer.

• 分别采用高含量和低含量氮的标准物质对仪器的高氮和低氮两个测量通道的线性和精密度进行检测；结果表明:线性关系良好；相关系数分别为0.；9999和0