CALL: A.WIHARTA 081294124885 085778084789 087784022201 â € ¢ Automatically Compensates Salinity and Barometric Pressure after manual input for increased accuracy â € ¢ Independent 100% and Zero Adjustment Calibrations give meter high accuracy across entire measurement range â € ¢ No Meter Warm-up Required with Galvanic Cell - takes measurements immediately and produces quick response â € ¢ Stores and recalls 100 data sets with temperature readings â € ¢ Displays Electrode Diagnosis gives slope, zero offset and millivolt values to help determine when to service or replace electrode â € ¢ Ready Indicator prompts whenever reading stabilizes â € ¢ Hold Function momentarily freezes reading for easy viewing and recording â € ¢ Auto-Power Off saves battery power after non-use â € ¢ Self-Diagnostic with message codes for easy troubleshooting â € ¢ Large Custom LCD provides optimum viewing with user-friendly icons â € ¢ Power with Batteries or Optional AC Adapter for use in the field or at bench-top with built-in stand Applications: Aquaculture: Use to monitor oxygen levels in catfish and shrimp farming; game stocking ponds; ornamental fish tanks and ponds; and in other fish farming applications. Industrial: Ideal for checks the quality of plant water intake and discharge, wastewater and water treatment, recirculating systems and industrial process systems.