Technical Specifications: Accuracy: ±5% (full range) Sample range: liquid sample, including dissoluble organic sample, e.g. released sewage and river water Measurement range: 0 to 35, 0 to 70, 0 to 350, 0 to 700mgL (no need to dilute) 700 to 4000 mgL (need to dilute) Sample quantity: =6 Volume: 500 ml Repeatability: =5% Resolution ratio: 0.1mgL(0to 35, 0 to 70mgL) Display: LCD Power source: AC 220, 50Hz Dimensions: 35×40×35cm 1mgL (0 to 350, 0 to700mgL) COD TESTER