Measure from pure water to seawater with one meter! COND600 features a broad conductivity range with Auto-ranging Capabilities for more convenience. :: More accurate with ±1% full scale accuracy at 3-Decimal resolution. :: Mega-memory space that stores/ recalls up to 500 Data Sets with temperature readings, as well as time and date-stamping formatted to meet GLP standards. :: Wireless and cable-free data transfer with infrared IrDA technology. Comes with PC-based Complimentary Data Acquisition Software for hassle-free data import and report-generation into any popular spreadsheet programs of your choice. :: Even Measures Pure Water with Pure Water Temperature Coefficient Option :: Large, easy-to-read custom screen with simultaneous information display allows optimum viewing with user-friendly icons :: Hold Function momentarily freezes reading for easy viewing and recording :: Self-Diagnostic with message codes for easy troubleshooting :: Non-volatile memory and individual password protection keeps settings and stored data safe even when you run out of batteries. :: Rugged and Waterproof to IP67 standard with protective rubber boot and handy velcro strap for better grip. :: Power with batteries or optional AC adapter for use in the field or at bench-top with built-in stand. :: Energy-Saving with Auto-power off feature.