Features: 2 to 5 points push-button calibration from low to high concentrations. Selectable multiple concentration units, including ppm, mg/L and mol/L. Direct readout ion concentration simplifies the elaborate measurement     process. mV measurement allows user to check performance of ion electrode. AutomaticTemperature Compensation (ATC) ensures highly accurate     measurements over the entire range. Automatic endpoint function freezes the stable measured values for     easy reading and recording data. Calibration due reminder prompts you to calibrate the meter regularly. Help message as aoperational guide to helps you understand how to     use meter. Setup menu lets user customize calibration points, ion concentration     units, stability conditions, temperature units, date and time to meet     measurement requirements. Reset function can resumes all settings to factory default values. Expanded memory stores and recalls up to 500 readings. Built-in real-time clock stamps stored data to meets GLP standards. Stored data can be transferred into computer...

ORPscan20 pocket ORP tester is used to monitors chemical reactions, quantify ion activity, or determine the oxidizing or reducing properties of samples. The meter has a BNC plug which can connect any standard ORP electrode.   Features: Absolute or Relative mV measurements provides accurate readings. Single point offset calibration allows you adjust displayed value to a     known standard. Hold function freezes current displayed value for easy viewing and     recording. Auto-power off feature helps you effectively conserve battery life. Setup menu lets user customizes automatic or manual hold function,     auto-power off feature to meet your personal preferences. Reset feature allows user to resume all of the default settings. Replaceable electrode reduces maintenance and replacement costs. Waterproof feature to ensures complete protection in harsh     environments.