Specification
Item Type: Aquarium Salinity Tester
Material: Plastic
Application: Aquarium Seawater Concentration Meter
Specific Range: 1.000-1.030
Salinity Range: 0-40
Applicable Temperature: 20-30℃ / 68-86℉

How to Use

Insert the hydrometer to 15cm (5.9in) below the water of the water or fish pond until the water overflows the baffle (slowly fill with water to the bubbles from adhering to the pointer).
When the water full ( with the top of the baffle), take out the hydrometer and place it on a .
bubbles adhering to the pointer cause inaccurate readings. Carefully tap the hydrometer to shake out the adhering bubbles.
Read the specific according to the inner scale, and read the salinity (PPT) according to the outer scale. It recommended that the specific of the seawater in the seafood pool between 1.020‑1.023, that , within the line.
Rinse with water after each use.

Package List
1 Aquarium Salinity Tester
1 Plastic Rod

Note
Before using the hydrometer the first time, fill it with water and detergent to the oil inside, which can be more accurate. "