What does The Saybolt viscometer measures?

What does The Saybolt viscometer measures?

• A. The time required for 60 milliliters of the tested fluid at 100 degrees to pass through a standard orifice
• B. Viscosity in centistokes
• C. Density of the fluid
• D. Boiling point of the fluid

Answer: (A)

The Saybolt viscometer determines viscosity by timing how long it takes a fixed volume of liquid to flow through a calibrated orifice at a specified temperature. The longer the flow time, the higher the viscosity. That is why the statement describing the time required for 60 milliliters to pass through a standard orifice at 100 degrees is the best description of what the instrument measures. It’s not directly measuring density or boiling point, and it doesn’t yield viscosity in centistokes without converting the timing result to a Saybolt value.

The Saybolt viscometer determines viscosity by timing how long it takes a fixed volume of liquid to flow through a calibrated orifice at a specified temperature. The longer the flow time, the higher the viscosity. That is why the statement describing the time required for 60 milliliters to pass through a standard orifice at 100 degrees is the best description of what the instrument measures. It’s not directly measuring density or boiling point, and it doesn’t yield viscosity in centistokes without converting the timing result to a Saybolt value.