Ostwald Viscometer is a type of viscometer that is widely used by laboratories when conducting research in the laboratory. Ostwald Viscometer is a measuring tool for calculating the viscosity of a solution or fluid used in research. Viscosity itself is the thickness or internal friction of a liquid. The lower the viscosity of a fluid, the faster the movement of the fluid. Conversely, the higher the viscosity of a fluid, the slower its movement. Here is a complete explanation of the Ostwald viscosity and viscometer!
Definition of viscosity
As explained above, viscosity is the thickness or internal friction in a solution or fluid. It can also be said that viscosity is the density of a fluid that can show the size of the touch in fluid. If the viscosity level of a fluid is relatively high, the fluid is more difficult to move because of high internal friction. Conversely, if the viscosity level of a fluid is low enough, the fluid is easier to move because its internal friction is low.
An easy example of the comparison of the level of viscosity in a fluid is water and oil. When you pour water from one container to another, it only takes a few seconds. However, compared to oil, you need more time to move it from one container to another. That is an example of the difference in viscosity in a fluid. The level of viscosity of water is lower than oil so that the movement is faster. Whereas oil has a higher viscosity level.
Definition of Ostwald viscometer
Now that you know the definition of viscosity from the explanation above, now is the time to switch to the definition of a viscometer. That said, a viscometer is a measuring instrument used to determine the viscosity level of a liquid. In research, knowing the level of viscosity of a liquid is important because it is very influential on the process and results of the research.
Viscometer itself there are many types. One that is often used is the Ostwald viscometer. Ostwald Viscometer is a viscometer that uses the Ostwald method. Determination of viscosity by using the Ostwald viscometer is done by measuring the time required for a fluid or liquid to flow in the capillary tube from point A to point B. By knowing the length of time it takes liquid to flow from line A to line B, it can be determined the viscosity level of two or more substances being compared.
How it works Ostwald Viscometer
In laboratory studies, each type of viscometer has a different way of working. Knowing how each viscometer works is important so you can get valid viscosity measurement results. If you don’t understand how each type of viscometer works, the viscosity measurement can fail.
Measurement of viscosity using the Ostwald viscometer is often done by a laboratory assistant. Calculating viscosity with the Ostwald viscometer is done by measuring the time taken for the liquid to pass through two signs when flowing due to gravity. To calibrate the Ostwald viscometer, it can be done with water whose viscosity level is known. Here’s how it works and use the Ostwald viscometer when in the laboratory:
- Make sure that the Ostwald viscometer is clean before use.
- Insert the liquid into the pipette and enter the liquid through the pipette to the Ostwald viscometer.
- Then, suck the liquid in the Ostwald viscometer with pushball until it crosses the two limits.
- Set a timer or relax the liquid to the first limit and start your count.
- While doing the calculation, you can record the results in a separate report and calculate the number obtained with the viscosity formula.
Using an Ostwald viscometer is common for laboratory assistants. Ostwald viscometer itself is very useful to know the viscosity of a liquid. If you are going to do research with a viscometer, hopefully this information can help. Don’t have an Ostwald viscometer?