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Brix Refractometer, Seawater Refractometer ATC 0-10% Salinity 1.000-1.070 Salt Specific Gravity Seawater Salinometer For Aquarium for Wine Making, Beer Brewing,Fruit, Sugar Content(With plastic case) VGVGV 0-10% 1.000-1.070 Brix Refractometer, Seawater Refractometer ATC Salinity Salt Specific Gravity Seawater How to Use...

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