Definitions for **"Specific gravity"**

The ratio of the density of a fluid to the density of water. The specific gravity of a fluid must be considered when making gravimetric measurements (weighing) of the output of a volumetric pump.

This property is the ratio of the specific weight of air or gas to that of dry air at the same pressure and temperature. ( 060)

The weight of a particular volume of any substance, compared with the weight of an equal volume of water. Since these weights will vary differently with the temperature, it is necessary to specify both temperatures involved, except for rough values.

Specific gravity is ratio of the density of a material to that density of a water. Since one must specify the temperature of both the sample and the water to have a precisely defined quantity, the use of this term is now discouraged.

The dimensionless ratio of the mass of an object to the mass of an equal volume of water at 4°C or other specified temperature.

As applied to natural gas, specific gravity is the ratio of the weight of a given volume to that of the same volume of air, both measured under the same conditions.

Ratio of the density of one substance to that of a reference substance at a specified tempeature. More

The weight of a material compared to the weight of an equal volume of water is an expression of the density (or heaviness) of a material.

the ratio of density of a material to the density of water at 4° Celsius

A comparison of the weights of equal volumes of a given liquid and water. A ceramic slurry with a specific gravity of 1.8 is thus 1.8 times heavier than water. The best way to measure specific gravity is to weigh a container and record its weight, then weigh the container full of water and then full of the liquid of unknown specific gravity. Subtract the weight of the container from each weight and divide the weight of the liquid being measured by the weight of the water.

The density of a liquid compared to that of water. A liquid with a specific gravity of 1.0 is the same density as water. A liquid with a specific gravity of 1.05 is 5% denser than water. Measuring specific gravity before and after fermentation gives a measure of how much sugar (which is heavier than water) has been converted into alcohol (which is lighter than water).

A measurement that compares the density of a materiel to the density of ordinary water. One cubic centimeter of water weighs approximately one gram, that is , 1g = 1cc. The "specific gravity" of water, therefore, can be expressed at "1.0."

Chemistry term which measures the weight of materials compared to an equal volume of water

The density of any substance, such as fermenting must, relative to the density of water. Measuring specific gravity provides information about the must weight. My article on must weight in my Sweet Wine series gives more information.

Ratio of the mass of an object compared to the mass of the same volume of water

The weight of a volume of a material compared to the weight of the same quantity of water.

The Specific Gravity scale on a hydrometer is commonly used by brewers and some winemakers to measure the sugar content of the wort or must. The scale is based on density relative to water. Pure water at the calibration temperature (usually 60o F) measures 1.000 on the Specific Gravity scale. If exactly one gallon of pure water was weighed next to exactly one gallon of a solution with a S.G. of 1.048, the second gallon would weigh 1.048 times the weight of the gallon of water. Because Specific Gravity relates to sugar content, alcohol content can be estimated from the change in Specific Gravity caused by fermentation. A triple-scale hydrometer will have a Potential Alcohol scale for just this purpose.

Also called relative density, the ratio of the density of a substance to that of water. Materials with a relative density of less than 1 are less dense (lighter) than water. Those with a relative density of more than 1 are denser (heavier) than water. The specific gravity of urine shows if it has a large amount of material dissolved in it (near 1.030) or if it is almost water (near 1.010).

This describes the weight of a material in relation to the weight of an equal volume of water. For example, a material with a Specific Gravity of 2.0 weighs twice as much as an equal volume of water. Units - Because specific gravity is a ratio of values for two materials, there are no units. Higher numbers indicate heavier materials.

The ratio of density of a given substance to that of pure water at 4°C and at a pressure of one atmosphere.

the ratio of the density of a substance to that of a standard substance, ususally water.

see relative density

The ratio of the density of a material to the density of water, (e.g., specific gravity of free-flowing ANFO is approximately equal to 0.85). Specific gravities less than 1.0 are lighter than water; specific gravities greater than 1.0 are heavier than water.

The ratio of the weight of a particular volume of a given substance to the weight of an equal volume of pure water.

The relative weight of a substance compared with that of an equal volume of water. S.G. values given are based on wood volume at 12% M.C. and oven dry weight.

Water has a Specific Gravity of 1.000 Suphuric Acid has a Specific Gravity of 1.835. By sucking a quantity of solution into the hydrometer, the float raises by the amount of density of the fluid, which can be read from the fluid line against the scale attached to the float. As density is affected by temperature, a quality hydrometer has a scale for temperature correction. Batteries must be checked at 26.7'C for each 5'C above that add 0.004 to the hydrometer. For each 5'C below 26.7'C subtract 0.004 from the hydrometer reading.

Describes the density of a solution. When the mead has not yet begun the fermentation process, the specific gravity is high due to the suspended honey particles in the must. As the mead ferments, the honey is converted to alcohol and carbon dioxide and the specific gravity of the solution is lower. Specific gravity is mea- sured with a hydrometer.

The ratio between the density of a given substance and the density of water.

The weight per volume of a liquid (SG), related to sugar content

A measure of density that compares a given item or substance to the density of water.

The measure of density of a liquid or solid compared to water. Water has an SG of 1.000 at 39°F.

The relative weight of a liquid, usually battey electrolyte, compared to the weight of the water. The higher the S.G., the more charge the battery holds.

Weight of a particle, substance or chemical solution in relation to an equal volume of water at 15C. Abbreviated as Sp.Gr.

A measurement of a liquid's density relative to the density of water. (specific gravity of water at 60°F is 1.000)

It represents a ratio of the density of a substance to the density of a reference substance at a specific condition.

( SPEH SIH FIK ) (GRAH VIH TEE ) THE WEIGHT PER CUBIC CENTI-METER, OF SOLIDS & LIQUIDS OR THE WEIGHT PER CUBIC LITER, ( ) OF ATOMIC ELEMENTS OR CHEMICALS,THAT ARE GASES. IT IS NORMALLY GIVEN, FOR THE MATTER AT 25°C AS IN THESE EXAMPLEs: 2.5 grams / cu'cm or 2.5 gr / cc FOR SOLIDS & LIQUIDS AND FOR GASES . 0899 grams per Liter or . 0899 g/L & . 0899 g

A scientific term which is used to describe the salt content of water.

A measurement of the weight percent of dissolved solids in 60° Fahrenheit water, calculated in Plato (Balling). Used to calculate the amount of extract in wort or beer.

Specific gravity is the density of your beer relative to water which tells you how much sugar (fermentable material) is in your beer. Original Gravity (OG) refers to the gravity of your beer at the time you pitch yeast. Final Gravity (FG) refers to the gravity of your beer after fermentation has ended. A gravity of 1.045 would be common for a medium style of beer. If you want to sound cool, refer to your gravity by the first two numbers, then the second two. For example, a beer with an OG of 1.075 would be referred to as "Ten-Seventy-five."

The ratio of the weight of any volume of substance to a weight of an equal volume of some substance taken as a standard, usually water for liquids and hydrogen for gases.

The ratio of the weight of a given volume of substance (such as electrolyte) to that of an equal volume of another substance (such as water) used as a reference.

The ratio of the weight of a given volume of gas to that of the same volume of air, both measured at the same temperature and pressure.

liquid measurement of density in relation to water. Requires the use of a hydrometer. Above 1.000 (or water) is denser than water.

A measure of density in comparison to pure water at a specific temperature. In this context, it is used as a measure of Salinity.

The specific gravity of battery electrolyte is the weight of the electrolyte compared to the weight of an equal volume of pure water.

A measure of density. This measurement comparies the density of a given volume of beer to that of the same volume of pure water.

ratio of density of a substance to the density of a reference substance, at a specified temperature. Specific gravity is a dimensionless number. Water is the reference for solids and liquids, while air is the reference for gases.

A property of any substance, its weight in relation to an equal volume of distilled water at 4º C. It is one of the most important properties to aid in the determination of a gem.

ratio of the density of a substance as compared to the density of pure water at 4 degrees C (the temperature at which water has the maximum density).

The density of a liquid when compared to water which has a specific gravity of 1.0. A liquid with a specific gravity of less than 1 will float on water; while one with a specific gravity of more than 1 will sink in water.

The ratio of the density of any substance to the density of some other substance taken as standard, with water being the standard for solids.

The relative weight of a given volume of the solid phase (pore space excluded) of a material. This value is compared to an equal volume of distilled water at 2 degrees C.

The ratio of the density of a substance to the density of a reference substance, both at specified physical conditions. As applied to gas, air is the reference substance. Two specific gravity definitions are recognized in gas measurement: Real Specific Gravity – The density ratio between a gas and air determined by measurement at the same temperature and pressure. Ideal Specific Gravity – The ratio of the molecular weight of a gas to the molecular weight of air. (Molecular weight of air = 28.96440)

This is the ratio of the density of the electrolyte with respect to water. Hydrometers that sample the electrolyte are used to monitor the state of charge of the batteries.

Metric measurement of Density, abbreviated s.g. See Density.

The ratio of the mass of a volume of material to the mass of an equal volume of water, at a given temperature.

Scientific term that expresses the density of a material.

the weight or degree of concentration of a substance compared with that of an equal volume of another, such as distilled water, taken as a standard

The weight of one substance compared to the weight of another substance, both of equal volume and measured at the same temperature and pressure.

the weight of a substance compared to air or water. A gas that is heavier than air (more than 1.0) will sink.

The weight of a substance in relation to an equal volume of water. Water is 1.0.

The weight of a sulfuric acid solution relative to water which has an assigned value of 1.0. In a storage battery, specific gravity is measured with a hydrometer.

The measure of the density of a liquid, usually the wort, as compared to the density of water, where water is 1.000. Measurement is taken with an instrument called a hydrometer. A wort with a specific gravity of 1.050 is five percent more dense than water. The figure is used to determine the amount of solids that have been dissoved in the wort, and in the determination of the beer's alcohol content.

A ratio: The mass of a body to the mass of an equal volume of water at 4oC.

The ratio of weight of a given volume of a substance to that of an equal volume of water at the same temperature. The temperature selected varies among industries, 15°C (60°F) being the usual standard.

density of a liquid expressed as a ratio to that of water

The weight of the electrolyte is compared to the weight of an equal volume of pure water, used to measure the strength or percentage of sulfuric acid in the electrolyte.

Measure of quantity of mass per unit of volume, density.

A ratio of the density of a liquid and the density of pure water at a specific temperature.

Is the comparison of a materials weight with the weight of an equal volume of water. It is very important in the jewelry business as each gemstone has a different Specific Gravity (SG) or heaviness if you would like to think of it that way. When buying gemstones the difference in SG is very apparent as stones of the same carat weight look larger or smaller depending on the SG. For example, as Topaz has a Higher Specific Gravity at 5.54 than Diamond which has a specific gravity of 3.52 when you view a 2ct Topaz along side a 2ct Diamond, the diamond looks much bigger.

more correctly referred to as density.

The weight of a substance compared with the weight of an equal volume of water (for solids and liquids) or an equal volume of air (for gases).

In the case of liquids, the ratio between the weight of equal volumes of water and another substance measured at standard temperature, where the weight of the water is assigned the value 1

The ratio of the mass of any volume to the mass of an equal volume of another substance taken as a standard. The standard for solids and liquids is usually water, and for gases the standard is air.

Dependent upon water content: Water Content (%) Specific Gravity (20 °C) 15 1.4350 18 1.4171 Other factors such as floral source slightly affect the specific gravity of honey. Honeys from different origins or batches should be thoroughly mixed to avoid layering.

This term is usually used in connection with the testing of the battery's electrolyte. A specific gravity test is used to determine the battery's state of charge. On sealed "maintenance free" batteries there is usually an indicator on the top of the battery that serves the same function.

A measurement of the dry matter in potato tubers, particularly important in the processing industry. Specific gravity is defined as the ratio of the density of any substance to the density of water. Formula: specific gravity = [( air weight) / ( air weight - water weight)

The density of the electrolyte compared to water as a standard. It indicates the strength and is measured by the hydrometer.

A comparison of a compound's weight per unit volume vs. a reference substance, usually water. Water is given a specific gravity of 1.0. Thus a compound that has a specific gravity less than 1.0 will float on water. A compound with a specific gravity greater than 1.0 will sink in water.

The ratio of the weight of a body to the weight of an equal volume of water at some specified temperature (same as FILM DENSITY).

Specific gravity is the density of a substance relative to water. E.g., the specific gravity of quartz is 2.65 meaning that the weight of quartz is 2.65 times that of an equal volume of water. Specific gravity is used in many process manufacturing industries to identify item attributes and to calculate material quantities for formulation.

The density of a mineral divided by the density of water.

Measures the "heaviness" of a substance compared to that of water. With regard to hermit crabs, the amount of salt in water. SG

The measurement used in marine systems to describe the salt content of water. Specific Gravity of seawater ranges from 1.022 to 1.030.

The ratio of the density of a fluid to the density of water. Water has a specific gravity of 1.0.

A measure of density. This measurement compares the heaviness of a given volume of beer to pure water. Malt sugar increases the specific gravity of wort and fermentation, by removing the sugars, lowers it. The scale is absolute, meaning a specific gravity of 1.050 means the beer weighs 1.050 times as much as an equal volume of water.

The density of a solution relative to the density of water.

of a substance, is the ratio of the weight of unit volume of the substance to the weight of unit volume of water at 4oC

The ratio of the density of a substance to the density of water at a given temperature.

the dimensionless ratio of the density of a substance with respect to the density of water. The specific gravity of water is equal to 1.0 by definition. Most petroleum products have a specific gravity less than 1.0, generally between 0.6 and 0.9. As such, they will float on water--these are also referred to as LNAPLs, or light non-aqueous phase liquids. Substances with a specific gravity greater than 1.0 will sink through water--these are referred to as DNAPLs, or dense non-aqueous phase liquids.

The ratio of the mass of a given volume of aggregate to the mass of an equal volume of water.

A measure of the weight of a liquid. Fresh water at 4°C (39°F) is given a value of one. If the liquid you are questioning will float on water the specific gravity is less than one. If it sinks, it is higher than one. Density is a better term.

The ratio of the weight of a body o the weight of an equal volume of water; relative density.

The weight of a liquid compared with an equal amount of pure water. The scale is absolute, that is, a specific gravity of 1.050 means the liquid weighs 1.05 times as much as an equal amount of water.

Ratio of weight of any volume of a substance to the weight of an equal volume of another substance. Water for solids and liquids and air or hydrogen for gases.

A measure of the density of a material usually obtained by comparing it with water.

A measure of the density of a liquid or solid compared to that of water ((1.000 at 39°F (4°C)).

The ratio of the weight of material to be weight of an equal volume of water usually at 20 degrees C, unless otherwise specified. Specific gravity of water = 1

The ratio of a gem's density to the density of water. A measurement to determine size against carat weight.

An expression of materials' density in terms of their relationship to a reference substance. Water at 4 C serves as the reference for hydrocarbons, both liquid and solid. Water has specific gravity of 1.0, as 1 cc of its weighs 1 gram. The specific gravity of liquid hydrocarbons indicates the ratio of their density in cc/gram to water's. For example, motor gasoline typically has a density around 8.5 barrel per metric ton, or 0.740cc per gram. That makes its specific gravity (0.740 cc/gram mogas)/(1.0 cc/gram water) = 0.740. Full expression of specific gravity requires specification of a temperature for both the described and the reference substances. Therefore, a complete citation of a motor gasoline sample's specific gravity might read 0.740 @ 60 F/39.2 F. The formula found under API gravity can convert specific gravity to API degrees.

The ratio of weight of a given volume of fluid to the weight of an equal volume of liquid/gas at stated temperature.

A number representing the density of a mineral, as specified by the ratio between the weight of a volume of the mineral and the weight of an equal volume of water.

The ratio of the weight of a substance compared to an equal volume of water. Water has a S.G. of 1.0, oils and fuels are less than 1.0. Rocks, salts, steel and things which do not float, have S.G. values greater than 1.0.

A measure of the density of a liquid or solid, as compared with that of water. Brewers use gravity to measure the fermentation's progress -- the more fermentable sugars, the higher the gravity; the more alcohol, the lower the gravity.

Ratio of weight of any substance to weight of equal volume of another substance, usually water as the standard for solids and liquid.

The ratio of the weight of a given volume of liquid to pure water. Pumping heavy liquids (specific gravity greater than 1.0) will require more drive horsepower.

Ratio of mass of a solid or liquid to the mass of an equal volume of distilled water, or of a gas to an equal volume of air under prescribed temperature and pressure.

Density of a liquid containing dissolved materials, compared with that of pure water.

The density of a material, expressed as the ratio of the mass of a given volume of the material and the mass of the same volume of water; a specific gravity greater than 1 means heavier than water, less than 1 means lighter than water. The specific gravity of the electrolyte in a battery can be used to measure the state of charge of the battery.

is the ratio of the density of a given gas to the density of dry air, both measured at the same specified conditions of temperature and pressure, usually 14.696 psiA and 60Â°F. It should also take into account any compressibility deviations from a perfect gas.

The ratio of the weight of a material at a stated temperature to the weight of the same volume of gas-free distilled water at a stated temperature.

The measure of the density of a material by comparing the mass per volume (density) of the compound to the mass per the same volume of distilled water at 4 degrees Celsius. Materials denser than water have numbers higher than 1.00, and those less dense have numbers lower than 1.00.

The weight in Grams of Liter of liquid, divided by 1,000 with water having a weight of 1,000 at 60 degrees Fahrenheit.

The weight per volume of a material compared to water. This determines whether a material sinks or floats. Less than 1.0, the material will float. Greater than 1.0, the material will sink.

Kind of like the density of liquid compared to water. Measured with a hydrometer (qv)

The ratio of the density of a given liquid to the density of water, and like that. It's a way to measure how much stuff you've dissolved in water. Typically sugars, in our case.

The ratio of mass of any material to the mass of the same volume of pure water at 4°C.

The weight of a substance compared with the weight of an equal volume of pure water at 4°C.

The ratio of the weight of the solution to the weight of an equal volume of water at a specified temperature. Battery acid can be measured with a hydrometer for an indication of battery state of charge.

the ratio of the density of a substance to the density of pure water; specific gravity of potato tubers is used as a measure of their dry matter content.

The ratio of the weight of a given volume of a substance to the weight of the same volume of water, as a means of comparison, at the same temperature.

The ratio of the weight to the given bulk to that of the same bulk of water (solids and liquids).

The ratio of the density of a fluid to that of water at standard conditions.

The relative weight of liquid (battery electrolyte) as compared to the weight of an equal volume of water.

the density of your wort compared to water. Measured with a hydrometer.

The ratio of the density (mass per unit volume) of a material to that of water

The ratio of the weight of a given volume of material to the weight of an equal volume of water.

specific gravities. Compare with density. The mass of a unit volume of a substance relative to the mass of a unit volume of water. Temperature must be specified when reporting specific gravities, since the density of the substance and of water change with temperature. Specific gravities are often reported relative to water at 4°C; at that temperature, water has a density of 1.00000 g/mL and the specific gravity of a substance is equal to its density in g/mL.

A measure of the density of a liquid relative to the amount of fermentable sugars it contains. By testing a beer's specific gravity it is possible to determine when the beer is done fermenting and to know in advance how strong the beer will be.

See Gravity.

In gemology, this refers to a process that determines the weight (or density) of a gem when compared to that of water. The result is a ratio expressed as a single number.

The ratio of the density of a material to that of water. The ratio is quoted as a pure number and is more precisely a measure of relative density.

The relative weight of a substance compared with that of an equal volume of water. The S.G. of wood is usually based on the green volume and oven dry weight.

The ratio of a fluid's specific weight to that of water; usually given as 1.000 at 60°F (15.6°C).

The ratio of the weight of a given substance to the weight of an equal volume of water at a specified temperature.

weight how heavy a mineral is Galena

The density of an object or substance relative to the density of water; or more generally, the ratio between the densities of two objects or substances. Since the specific gravity of water is 1.00â€”also the density of water ing/cm3â€”the specific gravity of any substance is the same as the value of its own density in g/cm3. Specific gravity is simply a number, without any unit of measure.

Weight of a substance is compared to the weight of an equal volume of another substance taken as standard.

the density of any material divided by that of water at a standard temperature.

The density of a mixture relative to water.

The ratio of the density of wood to the density of water at 4 C. Specific gravity of wood is usually based on green volume and oven-dry weight, in which case it is known as basic specific gravity. See also basic density.

The ratio of the density of a material to the density of the water at the same conditions. Specific gravity: Gf= liquid at flowing condition referred to water at 60°F; Gg= gas referred to air, both at STP.

the density of a liquid compared to the density of an equal amount of water.

A dimensionless ratio of the density of a particle to the density of water.

The ratio of density of a given liquid to that of pure water. Specific gravity is used to measure the salinity of seawater as compared to distilled water. Distilled water has a specific gravity of 1.000 while natural seawater has a S.G. of about 1.025.

Ratio of the weight of a volume of motor oil to the weight of an equal volume of water at a specified temperature (usually 60o F)

(relative density; specific) the ratio of the density of a substance to the density of some reference substance. For liquids or solids it is the ratio of the density (usually at 20 degrees Celsius) to the density of water (at its maximum density). (Concise Science Dictionary)

Weight of a given volume of any substance compared with the weight of an equal volume of water. Relative density.

refers to the weight of a liquid or solid in comparison to an equal volume of water.

The specific gravity of a substance is a comparison of its density to that of water. Imagine a gallon bottle filled with water, a second filled with feathers, a third filled with lead weights. There are equal volumes of material present, but the bottle with the feathers will weigh less than that containing water; the bottle with lead weights will weigh the most. In order of increasing specific gravity, these materials would be: feathers, water, lead. Specific gravity can be measured precisely, or estimated by a comparison, as above. To compare the specific gravity of any two minerals, simply hold a sample of one in your hand and "heft it," i.e., get a feeling for its weight. Then heft a sample of the other that is approximately the same size. If there is a great difference in specific gravity, you will detect it easily. It is often sufficient to note whether a mineral's specific gravity is significantly higher or lower than that of other minerals. Heft each of the specimens in your mineral set. Which ones have a high specific gravity? A low specific gravity

is the weight of a solid or liquid as compared to the weight of an equal volume of water.

Weight of a liquid compared to water, which is assigned value of 1.0.

Density, measured as the weight of the material compared with that of an equal volume of water.

The specific gravity (abbreviated s.g.) of a material is a comparison of its weight with the weight of an equal volume of water. Specific gravity measures the density of a material.

The ratio of the weight of any volume of a substance to the weight of an equal volume of another substance taken as standard at a constant or stated temperature. Solids and liquids are usually compared with water at 39ƒF (4ƒC).

The ratio of the weight of wood to an equal volume of water. The higher the specific gravity, the heavier the wood.

The ratio of the mass of a unit volume of a substance to the mass of the same volume of a standard substance at a standard temperature. Water at 4 C (39.2 F) is the standard usually referred to for liquids; for gases, dry air (at the same temperature and pressure as the gas) is often taken as the standard substance. See density.

The ratio of the weight of a product's known volume to the weight of an equal amount of water. A specific gravity of less than 1 means it will float on water. Most flammable liquids are lighter than water.

the ratio of the density of a body to the density of water, the latter being taken as unity.

The measure of the density of a liquid as compared to tah of water, which is given the value of 1.000. As sugars in beer wort and wine musts are converted to alcohol by yeast conversion, the liquid becomes less dense, therefore a lower gravity reading.

The ratio of the mass of a body or a substance to the mass of an equal volume of water; the ratio of the density of a body or a substance to that of water.

The ratio of the weight of any volume of a mass or substance to the weight of an equal volume of water at given temperature. The specific gravity of a substance times the density of water equals the density of the substance.

Weight of a particle, substance, or chemical solution in relation to the weight of water.

The ratio between the density of a substance and that of pure water at a given temperature.

The ratio of the weight of a unit volume of a material to the weight of the same unit volume of water.

The ratio of the weight of a certain volume of a substance to the weight of an equal volume of water, the temperature of which is 40C (39.20F).

The ratio of a weight or mass of a given volume of a substance to that of an equal volume of another substance, water for liquids and solids, air or hydrogen for gases.

The weight of the sulfuric acid electrolyte compared to water.

The ratio of the weight of a given volume of oil or melted fat (or any other substance) to the weight of the same volume of water at a specific temperature.

A numerical value representing the weight of a given substance as compared with the weight of an equal volume of water at 39°F (3.9°C), for which the specific gravity is taken as 1,000 kg/m3. See Density.

A system for measuring the density of a substance compared to the density of an equivalent volume of water, which is given a specific gravity of 1. Sugars, tannins and other substances in wine serve to raise its specific gravity, while alcohol, which is less dense than water, lowers it. Most often, wine densities are measured according to the Brix, Baumé or Oechsle scales. See also must weight.

The ratio of the weight of a specific volume of a substance compared to the weight of the same volume of pure water at 4oC.

The ratio of the weight or mass of a given volume of any substance to that of an equal volume of some other substance taken as a standard. The ratio of the density of any gas to the density of dry air at the same temperature and pressure is the specific gravity of the gas.

The ratio of the density of a substance to the density of water, usually determined at 4°C.

A measurement of the concentration of urine in a urine sample; determined by using a small hand-held device called a refractomer.

The measurement used in marine systems to determine salinity.

A scale found on the hydrometer used in home wine making to measure the sugar concentration of a must.

A method for measuring the copper concentration in etching solution. Similar to Baume'.

The degree of ripeness of the grapes.

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