pH:

• Range:  -2.00 - 20.00 pH
• Resolution: 0.1/0.01/0.001 pH
• Accuracy: ± 0.002 pH
• Calibration points: up to 6

Ion:

• Range: 0.001 - 19900
• Resolution: 2 or 3 digits
• Accuracy: ±0.5% FS (mono); 1% FS (div)
• Calibration points: up to 8

ORP:

• Range: ±2000.0 mV
• Resolution: 0.1 mV
• Accuracy: ± 0.2 mV

Temperature:

• Range: -10.0°C - 110.0 °C / 14.0 - 230.0 °F. DO: 0 - 60.0°C / 32 - 140.0 °F
• Resolution: 0.1 °C / 0.1 °F
• Accuracy: ±0.5°C / ±0.9°F
• Temp. compensation: ATC / MTC (0 - 100 °C) 

DO:

• Range: 0.0 - 90.00 mg/L or ppm
• Resolution: 0.01 mg/L; 0.01 ppm
• Accuracy: ± 0.2 mg/L
• Calibration points: 1

Salinity correction:

• Range: 0.0 - 50.0 ppt
• Resolution: 0.1 ppt
• Correction: automatic/manual

Barometric pressure correction:

• Range: 450 - 825 mmHg or 59.9 - 109.9 kPa
• Resolution: 0.1 mmHg or 0.1 kPa
• Correction: automatic

• Memory: 500 Data Sets with Date/Time stamping & Security password protection 
• IrDA Wireless Communications
• Auto-Calibration
• Data-logging options with time/date indexed
• GLP compliance
• Simultaneous Display and measurement of 4 parameters
• Cal-due alarm; pH slope/offset Display & Self-diagnostic
• Power: 4 X 1.5 V "AA" Alkaline batteries or 9 V DC adapter, 500 mA
• Warranty: 36 months