1.测量范围:0-20NTU;0-200NTU;0-1000NTU三档;自动转换 Measuring range :0-20NTU; 0-200NTU; 0-1000NTU third grade; automatic transmission 2.示值误差:不大于±2% Indication error: not more than ± 2% 3.稳定性: 不大于±1.5% Stability: less than ± 1.5% 4.零点漂移:不大于0.2NTU Stability: less than ± 1.5% 5.供电电源:1.5V 、5号电池4节 Power Supply: 1.5V, 4 no.5 batteries 6.外形尺寸:220×100×70mm Size: 220×100×70mm