KDN-2C定氮仪是一款基于凯氏定氮法原理设计的实验室仪器，广泛应用于粮食、饲料、食品、乳制品、饮料、土肥、医药及其他农副产品中蛋白质含量的测定。该仪器采用电热管加热方式，可使用自来水或蒸馏水作为水源，蒸馏器具备定时接收功能。其测定范围为含氮量0.05％-90％，精度高，相对差≤2％，平行差≤0.2％。消化过程产生的有害气体可通过排污管和抽吸泵排入下水道，有效抑制外逸。该仪器体积为380×330×740mm，电源要求为AC220V/50Hz。其生产厂家包括上海昕瑞仪器仪表有限公司、上海双旭电子有限公司等，这些厂家在相关领域具有丰富的生产经验和技术积累。

The KDN-2C Kjeldahl nitrogen determinator is a laboratory instrument designed based on the Kjeldahl nitrogen determination principle. It is widely used for the determination of protein content in grains, feeds, foods, dairy products, beverages, fertilizers, medicines, and other agricultural and sideline products. The instrument uses an electric heating tube for heating and can utilize tap water or distilled water as the water source. The distiller is equipped with a timing reception function. Its determination range is 0.05%-90% nitrogen content, with high precision, a relative difference of ≤2%, and a parallel difference of ≤0.2%. Harmful gases produced during the digestion process can be effectively prevented from escaping through the waste gas pipe and suction pump. The instrument has a size of 380×330×740mm and requires an AC220V/50Hz power supply. Manufacturers of this instrument include Shanghai Xinrui Instrument Co., Ltd and Shanghai Shuangxu Electronics Co., Ltd. These manufacturers have rich production experience and technical accumulation in the relevant field.