TDO9 - Pocket Dissolved Oxygen Tester 

TDO9
→ Ip67 Waterproof level, can float on the water surface.
→ Polarographic DO Electrode module can be replaced.
→ Auto OFF Function.
→ Double Line LCD Display.
→ Temperature Compensation.
→ Long Life Usage.
For more information WhatsApp - wa.me/9360847419