Dissolved Oxygen Meter (DO Meter) Model: PDO-520, Brand: Lutron, Taiwan

Specification
* Display: Dual function LCD, 29mm x 28mm
* Circuit: Custom one-chip microprocessor LSI circuit
* Range (dissolved oxygen): 0 – 20mg/L
* Range (air oxygen): 0 – 100%
* Range (temperature): 0 – 50°C
* Resolution (dissolved oxygen): 0.1ml/L
* Resolution (air oxygen): 0.1%
* Resolution (temperature): 0.1°C
* Accuracy (dissolved oxygen): ±0.4mg/L
* Accuracy (air oxygen): ±0.7%
* Accuracy (temperature): ±0.8°C
* Sensor structure: Polarographic type oxygen probe with incorporated temp. sensor
* Temperature compensation: 0 – 50°C, automatic adjustment
* Recall: Records maximum/minimum readings with recall
* Power off: Auto power off or manual off using push button
* Data hold: Freezes the display reading
* Sampling time: Approx. one second
* Operating temp: 0 – 50°C
* Operating humidity: 0 – 50°C
* Power supply: 4 x AAA batteries
* Power current: Approx. DC 6.2 mA
* Weight: 390g