Digital Dissolved Oxygen Meter DO Tester with ATC, 9.84ft DO Probe Cable, Portable Dissolved Oxygen Test Kit for Aquarium, Ponds, Hydroponics, Fish Tank, Brewing, Water Quality, Range 0.0-40.0 mg/L

Portable DO Meter with Dual Display (mg/L & % Modes)：This digital dissolved oxygen meter offers mg/L and % saturation modes for flexible measurement. Ideal dissolved oxygen tester for aquarium, fish...