Salinity Refractometer Handheld Seawater Hydrometers Optical Salinity Tester Portable ATC Refractometer, Dual Scale: 0-100‰ & 1.000-1.070 Specific Gravity, Saltwater Tester for Aquarium, Seawater,

الوصف

Salinity Refractometer Handheld Seawater Hydrometers Optical Salinity Tester Portable ATC Refractometer, Dual Scale: 0-100‰ & 1.000-1.070 Specific Gravity, Saltwater Tester for Aquarium, Seawater,