Hãng sản xuất: HANNA - ÝRange 0.00 to 3.00 mg/L (ppm)Resolution 0.01 mg/L (ppm)Accuracy ±0.04 mg/L (ppm) ±4% of reading @ 25°CLight Source Tungsten lampLight Detector silicon photocell with narrow band interference filter @ 420 nmEnvironment 0 to 50 ...