Portable routine model for dissolved oxygen measurement. New. intuitive menu structure with fast and easy T-Pad navigation. Robust design with IP67 protection for use in harsh and demanding environments. Intelligent Sensor Management (ISM®) functionality reduces the risk of errors. Up to 2 calibration points and a choice of 2 predefined oxygen standards. Automatic. manual and time dependant endpoint recording. Data memory storage for 200 data points. Power requirements: 4 x 1.5V AA or 1.3V NiMH accumulators. Supplied with: S4-Field Kit: Includes instrument. electrode clip. operating instructions. quick guide. test certificate. declaration of conformity and batteries. Also with InLab 605-ISM and zero oxygen tablets. With bottles for calibration. uGo™ carrying case.