Description
NOTE: The specific gravity is temperature dependent. With increasing temperature the specific gravity decreases. Therefore, the measured water temperature should be 25 °C / 77 °F to obtain a correct result.For an exact, reliable measure of the specific gravity, we recommend to use the Tropic Marin® High Precision Hydrometer. Fill the measuring cylinder with maximum 400 ml saltwater (water temperature = 25 ° C / 77 °F). The hydrometer should be dry and clean. Gently place the hydrometer into the water until it floats freely. Now read the specific gravity on the blue part of the scale of the hydrometer at the level of the water surface – NOT at the level of the meniscus, which is creeping higher at the edges! To avoid any distortion of future measurements, rinse the measuring cylinder well with fresh tap or reverse osmosis water to remove salt residues after each use. Tropic Marin® High-Precision Hydrometer: Maximum deviation: 0.001 at 25 °C / 77 °F Scale from 1.021 à 1.031 Resolution: 0.0001 Recommended range: 1.025 to 1.027 (at 25 °C / 77 °F)
