• Simultaneously displays DO and temperature
• IP67-rated waterproof housing
• Stores 250 data sets with time/date stamp

These meters deliver accurate, reliable results without requiring a lot of maintenance—no stirring or warm-up time required, and no electrodes to clean or preserve. They're not affected by interfering gasses like hydrogen sulfide. Keeping your meter in optimal condition is easy; just calibrate periodically and change the sensor cap once a year.

Meters feature a large LCD screen with easy-to-follow user prompts and mode indicators that guide you through calibration and measurement. Enter barometric pressure and salinity manually during calibration; automatic temperature compensation ensures high accuracy in fluctuating temperatures. Auto shut-off after 30 minutes of inactivity saves battery power. Units store up to 250 data sets with time/date stamp you can output to your PC via USB.

Includes: 9V battery, USB cable and instructions. Probes not included; order separately. 1-year warranty.

• Dissolved oxygen range: 0 to 20.00 mg/L
• Dissolved oxygen resolution: 0.01 mg/L
• Dissolved oxygen accuracy: ±1.5% of reading or ±0.15 mg/L, whichever is greater
• Dissolved oxygen (% saturation) range: 0 to 200%
• Dissolved oxygen (% saturation) resolution: 0.10%
• Dissolved oxygen (% saturation) accuracy: ±1.5% of reading or ±1.5%, whichever is greater
• Temperature range: 0 to 50°C (32 to 122°F)
• Temperature resolution: 0.1°C
• Temperature accuracy: ±0.3°C
• Memory & data output: 250 data points; USB output