Dissolved Oxygen Meter
NEWEST portable pen type dissolved oxygen meter ATC digital oxygen sensor do meter for fish farming aquarium use with backlight

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100% Brand New With Sealed Pack
Specification:
Product name:dissolved oxygen meter
Material:plastic+metal
Color:black
Measuring range:
Oxygen concentration:0.0~40.0mg/L
Dissolved oxygen saturation:0.0~300%
CF:0.0~40°C/32.0~104.0°F
ATC:0~40°C
Display:LCD display
Battery:3*1.5 v button battery