便携式pH/EC/TDS测试仪,范围:0–14PH,0–1990ppm,0–1990μS/cm, 精度:±0.2PH和±2%全标度的 EC and TDS 。提供SE600组合电极,一个9V电池,一个20mL PH值7.01, 1382 ppm 和1.413μS/cm的小袋缓冲溶液。
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