![]() Note that a meniscus forms on the neck of the hydrometer. Once the hydrometer has stopped bouncing up and down and the hydrometer is not touching the walls of the cylinder, a reading can be made. Assure that the hydrometer is not in contact with the sides of the cylinder and take the reading.Įxtreme care should be taken when reading the hydrometer it is very easy to misinterpret the scale.Note that the sample may overflow from the cylinder. Put the hydrometer with the bulb end down.Fill the glass cylinder with sample water.The user must be careful, though, to not break the the hydrometer or the cylinder as they are made from glass. The measurement made with the hydrometer can be used to calculate the salinity of a water sample. The hydrometers used for the Bayouside Classroom program range from 0.940 to 1.010 and are calibrated at 60✯/60✯. ![]() Hydrometers come with different scales depending on the characteristics of the liquid the user is measuring. Because specific gravity measures the mass of a liquid over the mass of distilled water, specific gravity is unitless. These hydrometers will be inscribed with “60✯/60✯” on their necks denoting that the reference density was measured at 60✯ and the sample should be at 60✯. Today, most hydrometers used in water quality testing are calibrated for with a reference temperature of 60✯. Classically, specific gravity was measured using the density of water at 4✬ (the temperature of maximum density for pure water). Because the density of a liquid changes with temperature, hydrometers are calibrated for different reference and sample temperatures. Specific gravity is the ratio of the mass of a liquid to the mass of an equal volume of pure water. Kaiser_carbonation_calculator_metric.A hydrometer is a tool scientists use to measure the specific gravity of liquids.Kaiser_carbonation_calculator_US.xls - preloaded with U.S.This is a spreadsheet that allows you to estimate your batch sparge efficiency and plan party gyle brewing ![]()
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