GDYS-201S型五合一多參數(shù)水質(zhì)分析儀是一款適用于多種水質(zhì)檢測的高效儀器，可快速測定生活飲用水、水源水、地表水、地下水和養(yǎng)殖用水等水質(zhì)中的亞硝酸鹽氮、氨氮、溶解氧、pH、鹽度和溫度等六個參數(shù)。該儀器采用高亮發(fā)光二極管作為光源，波長為430nm和538nm，測量精度高，氨氮和溶解氧的測量精度為±5%，pH測量精度為±0.2，鹽度為±2%，溫度為±1%。其測量范圍廣泛，氨氮為0.10-5.00mg/L，溶解氧為0.1-10.0mg/L，pH為0.0-14.0，鹽度為0.2-28%，溫度為-50～300℃。儀器設(shè)計緊湊，尺寸為190x110x95mm，重量僅0.4kg，便于攜帶和現(xiàn)場使用。此外，GDYS-201S還具備一次性專用試劑盒，檢測速度快，3-10分鐘即可完成檢測，并能直接顯示樣品溶液濃度值。

The GDYS-201S five-in-one multi-parameter water quality analyzer is an efficient instrument suitable for the rapid determination of six parameters, including nitrite nitrogen, ammonia nitrogen, dissolved oxygen, pH, salinity, and temperature, in various water qualities such as drinking water, source water, surface water, groundwater, and aquaculture water. The instrument uses high-brightness light-emitting diodes as the light source with wavelengths of 430nm and 538nm, ensuring high measurement accuracy. The measurement accuracy for ammonia nitrogen and dissolved oxygen is ±5%, for pH is ±0.2, for salinity is ±2%, and for temperature is ±1%. It has a wide measurement range: ammonia nitrogen from 0.10 to 5.00mg/L, dissolved oxygen from 0.1 to 10.0mg/L, pH from 0.0 to 14.0, salinity from 0.2 to 28%, and temperature from -50 to 300℃. The GDYS-201S is designed compactly with dimensions of 190x110x95mm and a weight of only 0.4kg, making it portable and convenient for on-site use. Additionally, it features a one-time-use dedicated reagent kit, allowing for rapid detection within 3-10 minutes and direct display of sample solution concentration values.