Apera Instruments, AI5522, EC8500 Portable Conductivity/TDS/Salinity Meter Kit with Data Logger& USB Data OutputAI5522 Includes Only:User manualCarrying caseUSB cableSoftware flash driveScrew driver6 EC8500 meter12.88 ms calibration solution1413 µS calibration solution84 µS calibration solution2301T-S conductivity electrodeBrief IntroApera Instruments Premium Series EC8500 Portable Conductivity Meter Kit is designed for lab-grade conductivity measurement in the field with a variety of intelligent functions and features in a rugged structure.Measuring parameters include conductivity, TDS (ppm), salinity (ppt), and temperature. One-tap switch.Easy CalibrationQuick and easy 1- to 3-point auto. calibration, recognizing conductivity standards of 1413 µS, 12.88 mS, 84 µS, and 111.8 mS.Last calibration date check available and calibration reminder can be set up.Complete Parameter SettingsAuto. lock, auto. power off function are available.Temperature unit, conductivity cell constant, reference temperature, and temperature compensation coefficient are all customizable. TDS conversion factor can be set from 0.40 to 1.00.Built ToughThe IP57 water-resistant structure makes the meter ideal for use in harsh environment. The rubber sleeve protects the instrument from general impact and gives you a firm grip.Large backlit LCD DisplayStability icon. Take the reading when the smiley face stays on screen.Icons for finished calibrationsSimultaneous temperature displayTimeManual storage icon and numberData logger with USB OutputAuto. or manual data logging with GLP Data management (500 sets of data storage) and USB data output for further analysis and report (only for Windows-based PCs).