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Saltwater Meter Salinity Meter Digital Water Tester Hydrometer Ideal for Hydroponics Aquarium Fish Pond Aquaculture High Accuracy Pen Type Meter Specific Gravity(SG) Salinity and Temperature 3 in 1
No more one eye closed and put another eye on eyepiece. Easy use.
No more estimating by visual inspection. Accurate.
No more lighting required. BackLight.$0.00