GDYS-103SE镁测定仪是一款适用于多种水质中镁含量快速测定的仪器，广泛应用于生活饮用水及其水源水、地表水和地下水等水质检测。其检测方法采用酸性格兰K法，具有较高的准确性。

该仪器由主机、样品前处理装置和试剂包等构成，整箱包装，体积小、重量轻，操作简单，既适合野外现场使用，也适合实验室操作。其光路系统采用固体发光器件，光源/单色器、比色槽、传感器一体化，无可动部件，脉冲供电方式使光源使用寿命可达10万小时，增强了仪器的抗震、抗潮性能，提高了精度、灵敏度和可靠性。

仪器内置工作曲线，无需配置标准溶液，只需用配套试剂进行零点校正后，即可实现样品的快速定量测定。样品显色和测量在同一密闭器皿中完成，无需转移，进一步提高了检测精度。此外，该仪器采用9V电池供电，满足实验室测定需要的同时，也支持现场测定，且具有电量自诊断和节能功能，自动提示电量不足，30分钟无操作自动关机。

The GDYS-103SE Magnesium Determination Instrument is a device for the rapid determination of magnesium content in various types of water, including drinking water and its source water, surface water, and groundwater. It employs the Acid Chrome K method for detection, ensuring high accuracy.

The instrument consists of a host unit, sample pretreatment device, and reagent pack, all packaged together. Its compact size and light weight make it easy to operate both in the field and in the laboratory. The optical system uses a solid-state light-emitting device that integrates the light source, monochromator, cuvette, and sensor. With no moving parts and a pulse power supply, the light source has a lifespan of up to 100,000 hours. This design enhances the instrument s resistance to vibration and moisture, improving its precision, sensitivity, and reliability.

The GDYS-103SE features an internal calibration curve, eliminating the need for standard solution preparation. After zero-point calibration with the accompanying reagents, it can quickly determine the magnesium content in samples. The sample coloring and measurement are performed in the same closed vessel, avoiding transfer and further increasing detection accuracy. Additionally, the instrument is powered by a 9V battery, suitable for both laboratory and on-site measurements. It also has a self-diagnostic power function and energy-saving features. It automatically alerts when the power is low and shuts down after 30 minutes of inactivity.