Color chart display color: 0.10.20.40.60.8125 Color: Light peach → Dark peach Quantity: 6 Measurement range (mg/L): 0.3 to 10 Water volume (ml): Approximately 2.5 Reaction time: 20 seconds Measurement interval: 6 levels Measurement item: Iron Fe 测量范围:0.3至10mg/l 测量方法:比色法