准确测定水中总氮含量，浓度直读；采用5.6寸彩色液晶触摸屏，操作界面先进；采用国标规定方法-紫外分光光度法,测量结果准确可靠；紫外双波长自动切换，波长重复性更好，保证测量结果精密度；配备完善的专业耗材试剂，测量更加简单、准确；内存20条标准曲线和5条回归曲线，可自行修订并保存；仪器自备校准功能，可根据标准样品计算并存储曲线，无需手动制作曲线。
Accurately determine the total nitrogen content in water, direct reading; use 5.6-inch color LCD touch screen, advanced operation interface; using the national standard method - UV spectrophotometry, the measurement results are accurate and reliable; UV dual-wavelength automatic switching, wavelength repeatability is better, to ensure Precision of measurement results; equipped with professional consumable reagents, measurement is simpler and more accurate; 20 standard curves and 5 regression curves of memory can be revised and saved by themselves; the instrument has its own calibration function, which can calculate and store curves according to standard samples. There is no need to make curves manually.
仪器自备校准功能，可根据标准样品计算并存储曲线，无需手动制作曲线；
具有大容量的数据存储功能，并能自由查看；
可打印当前数据及存储的历史数据；
[Measurement item] Total nitrogen [Measurement range] 0-100mg/L [Storage data] 1500 [Measurement accuracy] ±10% [Number of curves] 20 standard curves, 5 fitting curves [Display mode] 5.6-inch color LCD touch screen [Communication Interface] USB Interface [Optical stability] ≤±0.005A/20min [Batch volume] 16 (standard) / 25 (optional) [Operation interface] Full Chinese display [Printer] Thermal Line Printer [rated voltage] AC220V±10%/50Hz [rated power] 80W [Applicable methods] UV spectrophotometry [Temperature control range] 45～190°C [Product Model] LH-3BN [Product Name] Total Nitrogen Analyzer The instrument has its own calibration function, which can calculate and store curves according to standard samples, without the need to manually create curves; Has a large capacity data storage function and can be viewed freely; Print current data and stored historical data;