D-D Refractometer with Seawater Calibration
D-D Refractometer with Seawater Calibration is backordered and will ship as soon as it is back in stock.
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Description
Description
A refractometer is a simple and robust way of accurately measuring the salinity within your aquarium and should be used by every serious marine aquarist.
This refractometer unlike some cheaper alternatives is specifically calibrated and designed for seawater testing so is ideal for your marine aquariums.
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