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

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