Lutron CD-4319SD Water Hardness, Pure Water Meter, TDS, Salt, SD Card

\nSD Card real time recorder +TDS Salt Hardness\n20uS, 200uS, 2mS, 20mS, 200mS, Resistivity meter\nWATER HARDNESS/PURE WATER METER\nModel : CD-4319SD\n* Real time data logger ,save the datainto the SD memory card and can be downloaded the Excel, extra software is no need.\n* Function : Conductivity, TDS, Salt, Temp, Hardness.\n* High conductivity resolution, 5 ranges : 20uS x 0.01 uS, 200uS x 0.1uS , 2 mS x 0.001 mS, 20 mS x 0.01 mS, 200 mS x 0.1 mS.\n* Resistivity, 5 ranges :100 M -cm, 10 M -cm, 1 M -cm, 100 K -cm,10 K -cm.\n* TDS, 5 ranges : 20 / 200 / 2,000 / 20,000 / 200,000 ppm.\n* Hardness, 5 ranges : 10 / 100 / 1,000 / 10,000 / 100,000 ppm.\n* Pt glass electrode, high performance for pure water low conductivity measurement.\n* Automatic temp compensation.\n* it can select Temp. Coefficient of measurement solution.\n* Record (Max ,Min ) Data hold ,zero adjust.\n* SD card capacity : 1 GB to 16 GB.\n* Dot matrix LCD display.\n* Power by UM3/AA ( 1.5V ) x 6 batteries or DC 9V adapter.\n* RS232/USB computer interface.\n* Patented.\n