1.Insert the gravity into the tank or the fish pond below 15 cm until the water spills the plate. (slowly filling water to prevent bubbles attached to the pointer)
2.When the water reaches the full state (and the top level of the baffle), take out the hydrometer and place it on a horizontal surface.
3.The air bubbles attached to the needle will lead to inaccurate reading, carefully pending the gravimeter to shock the adherent bubbles.
4.Read the specific gravity according to the inner scale, and read out the salinity (PPT) according to the outside scale. We recommend that the sea water density of the seafood pool is between 1.020-1.023, that is the safety line.
5.Rinse with clean water after each use.
The proportion of range: 1.000-1.030
Salinity range: 0-40
Length x Height x Thick: 9*12*15cm/3.5″*4.7″*5.9″
Weight: 94 grams
Note: the first use of hydrometer, fill the warm water and detergent, cleaning the surface of oil clean inside, can make higher accuracy.
Cleaning: salt crystallization on the pointer will cause inaccuracy of reading. If the salt is crystallized in the hydrometer, the hydrometer can be soaked in warm water or vinegar for 30 minutes, then washed and dried with clean water.
1 x Hydrometer
Make sure this fits by entering your model number.
15 centimeters (6 inches) from the bottom of the water to avoid the error caused by the oil film on the water.
Keeping your hands clean and can prevent pollution of water from the fish pond.
It is easy to read and the precision can be + (-) 0.001 units of specific gravity. Professional design make it able to get accurate reading when the temperature of the fishpond is at 18 degrees -28 degrees
Fish pool, both inside and outside the cylinder can be read. The hydrometer that can float on the surface of the water is simple and easy to read.
The proportion of water sample can be automatically detected. The proportion, salinity and conductivity of sea water are shown once.