还原计 meaning in English

reduction agent

Major products : water quality testing monitoring instrument : ph meter , conductivity meter , tds meters , orp meter ; pna meter , salt meter ; rotary speed measurement of the machinery manufacturing equipment : many functions tachometer ; air quality testing instrument : thermometer , hygrometer ; others : refractometer , water pump
主要产品：水质检测监控仪： ph酸度计ec电导率仪tds计orp氧化还原计钠度计盐度计机械制造设备转速测量：多功能转速表光电转速表空气质量检测仪：数字温度计温湿度表光学检测仪器：折射仪以及污水潜水泵。