GRIRIW 2Pcs Aquarium Salinity Hydrometer Glass Water Salimeter Salt Water Gravimeter for Fish Tank Salinity Testing Pet Supplies

Water salimeter--the workmanship of this product is perfect, and you will have a good experience in using it,salt water gravimeter

Aquarium supplies--the proportion of water sample can be manually detected, easy to use,sea hydrometer

Saltwater measuring instrument--in aquariums, it is convenient to measure the gravity of seawater and raise fish,hydrometers

Hydrometer--manufactured with high-class glass materials, safe, durable and easy to use,saltwater hydrometer

Aquarium hydrometer--manufactured with , practical and durable for a long term use,aquarium salinometer