PRETYZOOM 1set Portable Hydrometer and Sea Water Testing Tool with Graduated Cylinder for Aquatic Monitoring Essential Kit for Beginners and Professionals Fish Tanks and Aquariums

Portable hydrometer--utilizing the principle of specific gravity measurement, it provides accurate data on seawater ,salt water gravimeter

Aquarium salinometer--this meter kit helps to monitor the of the water and ensure a suitable environment for fish tanks,water salimeter

Professional aquarium test tool-- meter utilizes the principle of gravity measurement to accurately calculate the salt density of seawater, providing reliable data support,aquatic hydrometer

Aquarium hydrometer--includes graduated cylinder, simplifying the process for beginners and professionals,densitometer for fish tank

Sea water testing tool--this meter measure the salt density in water, help to create an optimal habitat for your fish tanks,aquarium areometer