In our table below, we have given various liquids' characteristics with the temperature modified to one of more of a real world value. You can observe the little balls floating in the tube. Another version will determine the concentration of anti-freeze in an automobile radiator. The below tables provide the dynamic viscosity, the kinematic viscosity and the density of water at different temperatures. This is the same instrument that we use to tell if your automobile battery is fully charged. Water Properties Dynamic Viscosity, Kinematic Viscosity and Density. The float is calibrated to float on fresh water so if the fluid you are testing has a higher specific gravity, the float will raise in the liquid and at a lower specific gravity it will sink lower in the liquid. It consist of a glass cylinder with a rubber bulb on top, and a float positioned inside the glass tube.

We measure specific gravity with a hydrometer. Kinematic Viscosity v Sometimes viscosity is measured by timing the flow of a known volume of fluid from a viscosity. This value must be converted back to 1.002 x 10-3 Pas for use in calculations. The really important thing to keep in mind is that there is no correlation between viscosity and specific gravity. Centipoise (cP) is commonly used to describe dynamic viscosity because water at a temperature of 20вЊ has a viscosity of 1.002 Centipoise. Like specific gravity, viscosity can be altered by a change in temperature, but unlike specific gravity it can also be altered by agitation. Thick liquids are said to have a high viscosity and thin liquids a low viscosity. It is important that you do not confuse specific gravity with viscosity which is a measurement of a fluids resistance to pouring, though there is often what is perceived to be an obvious relationship. Viscosity can be measured by timing the flow of a known volume of fluid from a viscosity measuring cup. As you have already guessed fresh water at 4вЊ (39В° F) has been assigned a value of one (1). Centipoise (cP) is commonly used to describe dynamic viscosity because water at a temperature of 20вЊ has a viscosity of 1.002 Centipoise. If it sinks into the fresh water the specific gravity is more than one. If the liquid you are comparing will float on this water it has a specific gravity of less than one (1).

In relationship to liquids, the term specific gravity is used to describe the weight or density of a liquid compared to an equal volume of fresh water at 4вЊ (39В° F). Its density is 7.85 grams per cubic centimeter, or 7.85 kilograms per liter, or 7.85 metric tons per cubic meter. If something is 7.85 times as heavy as an equal volume of water (such as iron is) its specific gravity is 7.85. In the metric system specific gravity is the same as in the English system. Specific gravity is the heaviness of a substance compared to that of water, and it is expressed without units. Specific Gravity And Viscosity Of Liquids

Viscosity water