Water Salinity Refractometer, Handheld Seawater Tester for Aquarium, Marine Fish-Keeping, Pool Tank

Water Salinity Refractometer, Handheld Seawater Tester for Aquarium, Marine Fish-Keeping, Pool Tank. Dual-Scale Display: Simultaneously reads salinity in ppt and specific gravity for versatile measurement. Multi-Parameter Detection: Detects pH, TDS, EC, Salinity, Temperature, ORP, and Specific Gravity in one device. Portable Handheld Design: Compact and lightweight at 90g, ideal for aquariums, pools, and field testing. Comprehensive Certifications: ISO9001, RoHS, and CE certified for quality assurance and safety compliance. 1-Year Warranty Coverage: Includes 1-year after-sales service with free parts and support for mechanical defects. Flexible Customization: Offers full, minor, and sample-based customization options for tailored solutions.