Bante510 benchtop conductivity meter used for measuring the conductivity and TDS of liquids. The meter is widely used in environmental and ecological studies for monitoring the purity and concentration of water. Features: Large backlit LCD display shows mode indicators and help messages. Up to 3-point push-button calibration allows user to uses customized     calibration solutions. Auto-Ranging for conductivity and TDS measurements. Adjustable TDS factors, cell constants and temperature units. Automatic Temperature Compensation (ATC) ensures highly accurate     measurements over the entire range. Automatic endpoint function freezes the stable measured values for     easy reading and recording data. Manual temperature calibration provides accurate temperature value. Help message as a operational guide to helps you understand how     to use meter.

DOscan10 pocket dissolved oxygen tester has a 6-pin connecter that used for connecting the DO probe. The tester used to measures dissolved oxygen concentration or percent saturation of water. Features: 1 or 2 points auto-calibration (100% in saturated air or air-saturated     water, 0% in zero oxygen solution). Manual salinity and barometric pressure compensation. Selectable either temperature units between degrees Celsius (°C)     and degrees Fahrenheit (°F). Hold function freezes the current displayed value for easy viewing     and recording. Setup menu lets user customize calibration points, temperature units,     automatic or manual hold function to meet personal preferences. Reset feature allows user to resume all of the default settings. Auto-power off feature helps you effectively conserve battery life. Replaceable electrode reduces maintenance and replacement cost. Waterproof feature to ensures complete protection in harsh     environments.