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E. W. Dean and D. D. Stark in 1920
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What is the essential difference between Ostwald and Ubbelohde viscometer?
The essential difference between Ostwald and Ubbelohde viscometers is the method of measuring viscosity. Ostwald viscometer measures the flow time of a fixed volume of liquid through a capillary, while the Ubbelohde viscometer measures the flow time of a fixed volume of liquid out of a calibrated capillary. Additionally, the Ubbelohde viscometer is more accurate and suitable for measuring the viscosity of transparent liquids.
What is a Brookfield Viscometer used for?
A Brookfield Viscometer is used to measure the viscosity of fluids, such as paints, creams, and oils. It works by measuring the resistance of a fluid to flow under applied shear stress, providing important information about its consistency and flow behavior. This device is commonly used in quality control and research laboratories for a wide range of industries.
Why is Ostwald viscometer more important?
The Ostwald viscometer is important because it can accurately measure the viscosity of liquids, which is crucial in various industries such as food, pharmaceuticals, and manufacturing. It is simple in design and easy to use, making it a popular choice for viscosity measurements in research and quality control processes.
How do you find the viscosity of honey?
The viscosity of honey can be found using a viscometer, which measures the resistance of the honey to flow. By measuring the time it takes for a certain volume of honey to flow through the viscometer, the viscosity can be calculated. Honey is a non-Newtonian fluid, meaning its viscosity can change depending on factors like temperature and shear rate.
How does hand sanitizer gets viscosity testings?
Hand sanitizer viscosity testing is typically done using a viscometer, which measures the resistance of the hand sanitizer to flow. The viscometer provides a numerical value that indicates the viscosity of the hand sanitizer. This testing is important to ensure that the hand sanitizer has the correct texture and consistency for effective use.
Who invented the first viscometer?
The first viscometer was invented by Sir William Thomson in 1866. His design was based on the principle of measuring the time it took for a liquid to flow through a capillary tube.
Who invented redwood viscometer?
The redwood viscometer was invented by Norman Henry Redwood, a British chemist and engineer, in the late 19th century. It was designed to measure the viscosity of liquids, particularly petroleum and related products.
Who invented saybolt viscometer?
The Saybolt viscometer was invented by J. W. Saybolt in the early 20th century as a method to measure the viscosity of petroleum-based fluids like oils. It is commonly used in the petroleum industry to determine the flow properties of various fluids.
What is the basis for classification of redwood viscometer?
REDWOOD'S Viscometer is used to find out the viscosity of an standard rape oil and any of the fluids . The viscometers are classified into 4 types they are 1. Saybolt Viscometer 2. Engler Viscometr 3. Barbey Viscometer & 4. Redwoods Viscometer
Why is capillary tube fixed in Ostwalds viscometer?
The capillary tube is fixed in the Ostwalds viscometer is for passing the liquid.
How is viscosity measured?
viscometer
Construction and working of capillary flow viscometer?
A capillary flow viscometer, or Ostwald viscometer, consists of a U-shaped glass tube held vertically in a controlled temperature bath. It was named after its inventor, Wilhelm Ostwald.
Why viscometer is used?
A viscometer is used to measure the viscosity of a fluid, which is its resistance to flow. This measurement is important in various industries such as food processing, pharmaceuticals, and manufacturing, where the viscosity of a fluid can affect product quality and performance. By using a viscometer, manufacturers can ensure consistency in their products and adjust formulations as needed.
Is Ostwalds viscometer used to measure viscosity of more viscous oil?
Yes, the Ostwalds viscometer can be used to measure the viscosity of more viscous oil.
What is A and B in redwood viscometer?
In a redwood viscometer, A and B are constants used in the formula to calculate the viscosity of the fluid being tested. The formula is viscosity = A + B * time in seconds. The values of A and B are specific to the design of the redwood viscometer and are typically provided by the manufacturer.
What is the essential difference between Ostwald and Ubbelohde viscometer?
The essential difference between Ostwald and Ubbelohde viscometers is the method of measuring viscosity. Ostwald viscometer measures the flow time of a fixed volume of liquid through a capillary, while the Ubbelohde viscometer measures the flow time of a fixed volume of liquid out of a calibrated capillary. Additionally, the Ubbelohde viscometer is more accurate and suitable for measuring the viscosity of transparent liquids.
Why the Ostwald's viscometer is kept vertically during experiment?
if we put viscometer horizontally, movement of liquid in the tube is not properly and time required by liquid which helps in calculation of viscosity of fluid
