Dissolved Oxygen Meter Portable Tester Fish Pond Aquaculture Water Quality Testing Dissolved Oxygen Meter
High-precision Optical Indexing Sensor: Adopts the principle of spectrophotometry, with a wide range of wavelengths for fast and accurate measurement.
External Dissolved Oxygen Probe Design: Probe with a sampler to take water samples, without reagents, can be directly measured dissolved oxygen + water temperature.
LCD High-Definition Display: 99 sets of data storage, large screen reading more easily, high-definition backlight display key to store data, easy to view comparison.
Compact and Protable: Pocket size, DO meter lightweight and easy to move, you can test water anywhere to get the purest water.
Wide Application: Suitable for freshwater aquaculture, mariculture, swimming pool, beverage factory, sewage treatment plant, laboratory, etc.

Specifications:
Material: ABS
DO: 0~30.0mg/L, 0.1mg/L, ±3.0%FS
pH: 3.5~11.0, 0.1, ±0.2
Nitrite: 0~1.00mg/L, 0.01, ±5% or ±0.01mg/L
Ammonia Nitrogen: 0~1.00mg/L, 0.01, ±5% or ±0.01mg/L
Calibration: 100% in Air (Only DO)
Measuring Range: 0.0~50℃ (need Connected to DO probe)
Resolution: 0.1℃
Accuracy: ±0.5℃
Unit: ℃/℉
Records: 99 points
Salinity Compensation: 0~42ppt
Altitude Compensation: 0~3500m
Auto Temperature Compensation ATC: Yes
Automatic Shutdown Function: There is no button operation for half an hour
LCD Size: 27 * 45mm
Backlight: Yes
Cable Longth: Around 3.5 meters (including the probe)
Power Supply: 4 * AAA battery (Not included)
Item Size: 164 * 70 * 30mm / 6.45 * 2.75 * 1.18in
Item Weight: 132g / 4.65oz
Package Weight: 2.5kg 
Package Size: 35.5 * 28.5 * 11cm