What is the principle of Saybolt viscometer?

A device used to measure the viscosity of a fluid. The saybolt viscometer controls the heat of the fluid and the viscosity is the time is takes the fluid to fill a 60cc container. The device used for measurement of viscosity is known as viscometer .

What is the principle behind viscometer experiment?

The principle of the viscometer is to determine the falling time of a sphere with known density and diameter within a fluid filled inside glass tube. The viscosity of the fluid sample is related to the time taken by the sphere to pass between two specified lines on the cylindrical tube.

What is the principle of viscosity?

The principle of viscosity is stated here: When a layer of liquid is subjected to move upon a surface or another layer of the same liquid, the fluid particles tend to oppose such movement; this resisting force developed by a liquid is called viscosity.

What is the function of a viscometer?

viscometer, instrument for measuring the viscosity (resistance to internal flow) of a fluid.

What is the meaning of Saybolt?

: viscosity as determined by the number of seconds required for an oil heated to 130° F for lighter oils and 210° F for heavier oils to flow through a standard orifice and fill a 60 milliliter flask.

What is the difference between Redwood viscometer and Saybolt viscometer?

Answer: A Redwood viscometer works on the same principle of Saybolt viscometer. Here, the stopper is replaced with an orifice and Redwood seconds is defined for collection of 50ml of liquid to flow out of orifice. In general, both the viscometers are used to compare the viscosities of different liquid.

Which method is used for the determination of viscometer?

Capillary Viscometers Measuring viscosity via a capillary tube is one of the oldest methods of determining the kinematic viscosity of a sample, requiring prior knowledge of the density and volume of the sample of interest. This fluid is passed through a vertical U-tube of known dimensions and very small diameter.

What is cone and plate viscometer?

Cone and plate viscometers or viscosimeters are rotational viscometers that use a narrow-angled cone placed on a horizontal flat plate. The generator of the cone makes a very small angle, one to two degrees to the plate. The wedge-like space between the cone and the plate is filled with liquid to be investigated.

What is the principle of measurement of viscosity by Ostwald viscometer?

Ostwald viscometer is use to determine viscosity of Newtonian fluid. When the liquid flow by gravity time required for the liquid to pass between two mark A and B through the capillary tube is determined.

What is the basic principle of determination of viscosity average molecular weight?

The molecular weight of the polymer is measured by using viscometer and the molecular weight obtained by this technique is called viscosity average molecular weight. The molecular weight of the polymer solution is very high so the viscosity of polymer solution is very high compared to that of pure solvent.

What are the types of viscometer?

6 Different Types of Viscometers & How They Work

• Orifice viscometers.
• Capillary viscometers.
• Falling piston viscometers.
• Rotational viscometers.
• Falling ball viscometers.
• Vibrational viscometers.

What is Saybolt color?

Saybolt Color scale is used for slightly yellowish but low chroma petroleum products such as mineral oil, kerosene, gasoline, naphtha, aviation fuels, white petroleum waxes and pharmaceutical white oils.