Portable Hand Held Salinity Meter Saltwater for Seawater Refractometer ATC Tester Hydrometer Kit Automatic with Seawater Marine Fishkeeping Aquarium Fresh Fish Tank Water Testing Swimming Pool

1.Portable aluminium alloy material multi-purpuse salinity hydrometer for aquarium,Measure salt or salinity of water.

2. Precice dual scales:specific gravity and concentration parts per thousand ,ATC compensation Range (i.e. Built-in Automatic Temperature Compensation System) from 10℃ to 30℃.And HD prism and eyepiece,precise scale at a glance.

3.Widely used in refractometer saltwater aquarium and marine monitoring，laboratory,fishery,swimming pool hydrometer in etc.

4.Saltwater aquarium test kit comes with hard case,calibration fluid , dropper, screwdriver, user manual and cleaning cloth,packed with a plastic case, convenient to store and carry around.

5. The main body is made of all copper, which is non staining, non corrosive, and non rusting, making it very durable.