viskometer ostwald adalah

Keberadaan Viskometer Ostwald Adalah Penting Bagi Laboran. Apa Sebabnya?

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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.

Readmore: Advantages and disadvantages of the Viskometer Cup and Bob

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:

  1. Make sure that the Ostwald viscometer is clean before use.
  2. Insert the liquid into the pipette and enter the liquid through the pipette to the Ostwald viscometer.
  3. Then, suck the liquid in the Ostwald viscometer with pushball until it crosses the two limits.
  4. Set a timer or relax the liquid to the first limit and start your count.
  5. 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?

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These are the Principles of Falling Viscometer Work that Must Be Known

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In the laboratory, there are tons of tools you find that are related to research. One of them is a viscometer. A viscometer is a device used to measure the viscosity of a liquid solution. The viscosity of a liquid solution is the viscosity or internal friction in the liquid. The higher the viscosity level of a liquid, the more difficult it is to move from one point to another. Conversely, the lower the viscosity of a liquid, the faster it moves from one point to another.

To calculate the level of viscosity of liquid, the instrument used is a viscometer. One of them is a falling ball viscometer. The working principle of the falling ball viscometer is how the viscosity is calculated by looking at how long it takes by the ball to move from one point to another. Here’s the full explanation!

Knowing what viscosity is

As explained above, viscosity is the level of viscosity or internal friction in the solution. In a solution or liquid, there is such a thing as movement within the liquid itself. This movement produces internal friction. When the internal friction in the liquid is very high, the level of viscosity of the liquid becomes high. Meanwhile, when the level of friction in a liquid is low, the viscosity level is low.

Then, what is the effect of viscosity or viscosity level on liquid substances? The level of viscosity will affect the speed of movement of a liquid. When viscosity is high, liquid is more difficult to move and takes a long time to move. Conversely, when viscosity is low, liquid is easier to move and requires less time to move.

Easy examples are water and oil. Water has a viscosity of lace so it moves quickly. Meanwhile, oil has a high viscosity making it more difficult to move or move. When you move water and oil from one container to another separately, which is faster? Of course water. Water will move more quickly from one container to another than oil. This is the purpose of viscosity, to determine the level of viscosity and speed of the liquid moving matter.

Viscometer function

Now that you understand the principle of viscosity, it is time to understand about the measuring device. Viscosity of liquid can be measured and known from a device called a viscometer. Viscometers see the speed of liquid flowing through a glass capillary. Usually this is made of glass pipes with a small diameter.

The viscometer will see how fast the liquid is flowing. You can enter the sample of the liquid you want to know the viscosity into the viscometer. When the viscometer is running and it turns out the solution is moving fast, then the viscosity is lace. Otherwise, the viscosity is high. Nowadays there are many types of viscometers. Including one of them is a falling ball viscometer.

The working principle of the falling ball viscometer

A falling ball viscometer is a viscometer used to measure the viscosity of Newton’s liquids. The working principle of the falling ball viscometer is at one point the sliding speed. Simply, the working principle of a falling ball viscometer is to see how much time it takes for the ball to move from one point to another when it is put in a different solution.

The falling ball viscometer will be filled first by a liquid or solution. The shape of the falling ball viscometer itself is a small transparent tube that makes it easy for you to see what is happening inside it. Then, after the solution has entered, the ball will be inserted. When the viscometer is upright, the viscometer is reversed 180 degrees so that the top of the tube becomes the bottom and the bottom of the tube becomes the top.

The working principle of the falling ball viscometer is to see how long it takes the ball to fall from the bottom to the top after it is flipped. If the ball takes a few moments to turn around. Then the solution is thick with high viscosity. If the ball falls directly (as in aqueous solution) then the viscosity level of the solution is low with the same low viscosity.

How, are you now familiar with the working principle of the falling ball viscometer? If you need a falling ball viscometer for research needs, you can contact Infiniti Bioanalitika Solusindo (IBS) because we provide a variety of laboratory equipment that is useful for you.

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How Does the Principle of Viscosity Work in Various Solutions?

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The working principle of viscosity is different for each solution. Viscosity will determine the thickness or internal friction in it. Some solutions have high viscosity. Some other solutions have low viscosity. To find out whether the viscosity of a solution is high or low, you can do research and compare the results. Here’s a complete explanation of the working principle of viscosity in each solution!

Definition of viscosity

In chemistry, there is a term called viscosity. Viscosity is a term that refers to shear stresses with a constant shear speed. Usually research on viscosity is related to liquid. Viscosity shows the thickness or thickness of a fluid or liquid. If a liquid is thick and concentrated, then the viscosity is high. If the liquid is very liquid (water), the viscosity is low.

The effect of viscosity on liquid is on the speed of the liquid moving from one place to another. For example, you have water in one container and oil in another container. Then, you move the two liquids into another separate container. You move water from container B to C and oil from container D to E. Compare the time taken by the water and oil to move. Does the oil take longer to move from one container to another? Of course, because oil viscosity is higher than water, it makes it take longer to move.

Examples of viscosity studies

Usually, in research conducted in a laboratory, a laboratory person compares many liquids to be measured and their viscosity known. Knowing the viscosity is important because it will affect the process and results of the research conducted. But there are also special studies conducted to determine the viscosity of each type of liquid. Research like this is usually used to compare the high and low of various liquid substances and what factors affect viscosity.

If you do research using a variety of liquids, then you can find out how much the viscosity of each liquid. For example, the viscosity of water is 1.8×10-3, the viscosity of blood is 4.0×10-3, the viscosity of engine oil is 200×10-3, and the viscosity of ethyl alcohol is 1.2×10-3. From this comparison, you can know that each liquid has a different level of viscosity. Then, what exactly affects the working principle of viscosity in each solution?

Things that affect viscosity

Basically, the working principle of viscosity is influenced by several things, as below:

Concentration of solution

Viscosity is directly proportional to the concentration of the solution. Therefore, if the concentration of the solution is high, the viscosity of the solution will be high. Conversely, if the concentration of the solution is low, then the viscosity is low. Such is the principle of work of viscosity in solution.

Intermolecular strength

The viscosity of the liquid will increase with the increase in the number of other molecules. For example, the viscosity of a liquid will increase if hydrogen is added. This is because the power has changed.

Size and molecular weight

Just as the intermolecular forces affect the viscosity of the liquid, the size and weight of the molecule also influences the working principle of viscosity. The more molecular weight in a liquid, the higher the viscosity.

Temperature

Temperature is very influential on the level of viscosity of liquid. The viscosity of liquid will increase when the temperature drops. For example, hot water that has low viscosity. When the temperature is lowered, until the water becomes almost frozen, the viscosity will increase.

That is an explanation of the working principle of viscosity in each solution. In essence, the viscosity of liquid substances differs from one another based on the things that affect them. The viscosity of the liquid itself can be measured using a viscometer. You can get a viscometer at Infiniti Bioanalitika Solusindo (IBS)!

viskometer hoppler

Understanding the Function Specifications of the Hoppler Viscometer

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A viscometer is a device used to measure the viscosity of a liquid. Usually a viscometer is often found in laboratories for experimental purposes. The thickness of the liquid needs to be known to find out the ideal liquid. The ideal liquid should not be thick, or have no viscosity. One type of viscometer is a hoppler viscometer.

What is a hoppler viscometer?

Hoppler viscometer functions the same as other viscometer, which is to measure viscosity in liquid. How it works from the hoppler viscometer is different from other viscometers. The uniqueness of the hoppler viscometer is the measurement of the time it takes for the ball to pass through a liquid that has a certain height. The iron ball can pass through the liquid because of the gravitational force that pulls the ball so it falls to the bottom.

Hoppler viscometer itself functions based on the law of Stokes. Due to applying this Stokes law, viscosity is measured using objects dropped on liquid. Objects dropped on a hoppler viscometer to measure viscosity must have a definite size. In the hoppler viscometer, the friction and gravity must be considered to ensure the thickness of the measured liquid.

What are the specifications of the hoppler viscometer?

Hoppler viscometer consists of several parts that function together to help measure the viscosity of liquid. The following are some parts of the hoppler viscometer and their functions:

  • Steal ball: a viscosity gauge on the hoppler viscometer.
  • Glass tube: a place to put liquid to be measured and steal ball to be dropped.
  • Light barrier: a limit for knowing where measurements will begin and end.
  • Pressure cell: the outside of the hoppler viscometer to protect the liquid to be measured so that it has a constant pressure.

How does the hoppler viscometer work?

To measure the viscosity (viscosity) of liquid using a hoppler viscometer, there are several procedures that must be followed properly. First, measure the diameter of the ball to be used, followed by weighing the mass of the ball. Furthermore, the length of the viscometer tube must be measured from the upper light barrier to the lower limit. Before starting to measure viscosity, determine the density of the liquids. Make sure the temperature of the hoppler viscometer first, then fill the hoppler viscometer tube using a liquid that will be measured for thickness.

The next step is to drop the ball (steal ball) from the iron or glass. Due to gravity, the ball can fall down. The fall of the ball can be seen as a function and price of the liquid being tested for its viscosity. Start turning on the stopwatch to measure the duration of the ball falling from the top of the light barrier to the bottom. Record the duration of time needed from the ball above to below the light barrier.

To ensure the accuracy of the measurement results, repeat the procedure 10 times in a row. What is distinguished from 10 times the procedure is the temperature of the liquid. To find the viscosity value of a liquid, use the data that has been recorded using the formula:

F = 6.π.η.r.v

F = stokes style

v = falling ball speed

r = fingers

η = viskositas

What are the advantages and disadvantages of a hoppler viscometer?

The advantage of a hoppler viscometer is that it is easy to apply. Does not require procedures and tools that are too difficult and complicated to implement. While the hoppler viscometer also has its own shortcomings, which is difficult to use to measure viscosity (viscosity) on liquid substances that are colored or not clear. In addition, the measurement of viscosity still requires calculation through formulas. Liquid samples are also needed a lot because the procedure must be repeated 10 times to ensure accuracy.

Thus the specification of the function of the hoppler viscometer. If you are looking for a hoppler or other type of viscometer, you can find it at Infiniti Bioanalitika Solusindo (IBS). IBS is ready to meet your needs because it sells a variety of laboratory equipment to support the quality of your experiments.

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Types and Working Principles of Viscometers

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In the laboratory there are many tools to help the continuity of an experiment. The tools used are adjusted to the experiments carried out. Viscometer is a device that is often found in laboratories. The purpose of a viscometer is to measure the viscosity of a liquid. Viscosity itself is the thickness of a liquid. The viscosity of the liquid itself is measured to determine the value of resistance to object shift.

The usefulness of measuring viscosity itself is useful for knowing whether a liquid is ideal or not. Supposedly, the ideal liquid does not have thickness. Viscometers are important to have in the laboratory, because most experiments must use liquid as the substance under study. Therefore, viscosity is important to have in a laboratory, especially for conducting tests on liquid substances.

How does a viscometer work?

Viscometer is essentially useful for measuring the thickness of a liquid. A viscometer measures the thickness of a liquid using a glass tube, or what is commonly called a capillary glass. The liquid can be said to have a low viscosity (liquid) if the liquid can flow quickly in the pipe. Vice versa, the liquid is said to have high viscosity (viscous) when the liquid flows slowly in the pipe. Viscometer measures viscosity by measuring the speed of liquid flowing in the cylindrical tube. Thus, it can be concluded that slow flowing liquid is thick liquid and fast flowing liquid is non-viscous liquid.

What are the types of viscometer?

Meski memiliki fungsi yang sama, yaitu untuk mengukur cairan, namun viskometer memiliki berbagai macam jenis yang berbeda. Mari simak beberapa jenis viskometer di bawah ini.

Ostwald Viscometer

The way the ostwald viscometer works is by finding out the time it takes for the liquid to pass through 2 existing signs. Water can flow in the ostwald viscometer because of the gravitational force that causes the water to move. Calibration must be done on a viscometer to be able to maintain its accuracy in measuring viscosity. To calibrate the ostwald viscometer, use water that has a known level of thickness beforehand.

Hoppler Viscometer

The hoppler viscometer works the same as any other viscometer, but has a different way of working. Stokes’ law is applied to the hoppler viscometer to measure the viscosity of the liquid. Stokes’ law itself means that the viscosity of a liquid is known by the way objects are dropped on liquid. The object used to help measure the thickness of the hoppler viscometer must be a fixed size object. In addition, the hoppler viscometer needs to consider the force of friction and gravity.

Cup and Bob Viscometer

In a cup and bob viscometer, the way of measuring viscosity is done by entering the liquid to be measured in a certain space. This space is located between the inner wall of the bowl (cup) and the outer wall (bob). After entering the liquid, the next step is to install the rotor. Finally, turn on the appliance and the viscosity value will be immediately visible on the scale.

Cone and Plate Viscometer

Clone and plate viscometer is a more sophisticated viscometer, because it can measure the viscosity of the liquid in detail. This viscometer can measure liquid with a small volume. In addition, the measurement results from the cone and plate viscometer have high accuracy.

This is the way things work and the types of viscometers. Laboratories definitely need a viscometer, especially for measuring the viscosity of liquid substances. Viscometers can support the results of experiments conducted in the laboratory. Don’t forget to calibrate the viscometer to ensure the accuracy of the viscosity measurement of a liquid.

If you need a viscometer, you can search for a viscometer according to your needs through Infiniti Bioanalitika Solusindo (IBS). IBS is a laboratory distributor in Indonesia, selling a variety of laboratory equipment that you need to support your experiments. IBS is ready to meet the needs.