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RES-28ATC Salinity Refractometer 0-28% ATC, Sodium Chloride (NaCl) Salt Level Meter Tester, Test Kit for Sea Water Brine Seawater Food Industry Pickle Soy Sauce, ±0.2% Accuracy

REBS-28ATC 2-in-1 Brix Salinity Refractometer Dual Scale 0-32% Brix & 0-28% Salinity with ATC Sodium Chloride in Food Salt Seawater Brine Beer fruits Cutting Liquid

RES-10ATC Dual Scale Salinity Refractometer ATC 0-100ppt (0-10%) & 1.000-1.070 Specific Gravity, Portable Meter Tester for Seawater Salt Sea Water Aquarium Brackish Reef Tank Marine