The CDH-5020 Series, PHH-5000 Series, and TDH-5031 are easy to use. The units feature a telescoping electrode which extends to 80 mm. The kits are supplied with a carrying case, battery, calibration solution, and complete instructions. The ORP-5041 does not come with screw driver and calibration solution. No adjustment potentiometer on the ORP-5041.
Please download full specifications for a complete list of available models