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²£«~®i¥Ü > Equipment & Instrumentation > Instruments PH/Cond/Temp Meter “EXTECH” #EC500 多值儀   Measures Conductivity, TDS, Salinity, Temperature, And pH §ó¦h¸Ô±¡ “EXTECH” PH/Cond/Temp Meter # EC500 多值儀        ©ö¶T³qµ¦¹º¤Î³]­p ª©Åv©Ò¦³ ¤£±oÂà¸ü