aquarium digital dissolved oxygen meter online manufacture

Measuring range: 1. Dissolved oxygen: (0.020.0)mg/L 2. Temperature: (0 ~ 40) C Basic error: 1. Dissolved oxygen: 0.3mg/L 2. Temperature: 1C LCD Automatic temperature compensation, fast response time Portable, ... Read More

Smart Blue Tooth Dissolved Oxygen Meter 0.0-30.0 mg/L Digital Online Detector High Precision Electrode Tester for Hydroponics Product Description: 1,Dissolved oxygen refers to the concentration of molecular ... Read More

Smart Handheld 6-in-1 Dissolved Oxygen/PH/TDS/EC/SALT/TEMP Water Quality Analyzer Operating System iOS 7.0 or later, Android 4.3 or later Tester Automatic Calibration pH Tester Capacity 1500ml (57oz) Probe ... Read More

YIERYI Digital ORP Tester electrical 0-1999mg/LmV ORP Meter ORP-986 Water Hydroponics Specifications: Range 0~1999mg/LmV Resolution 1mV Accuracy 5 mV Batteries 4 x 1.5V alkaline Environment 0 to 50C,RH 95% max ... Read More