is the efflux time in seconds required for 60 milliliters
of a petroleum product to flow through the
calibrated orifice of a Saybolt Furol viscometer,
under carefully controlled temperature, as prescribed by test method
ASTM-D-88. The method differs from
Saybolt Universal viscosity
only in that the viscometer has a larger orifice to facilitate testing of
very viscous oils, such as fuel oil (the word
"Furol" is a contraction of "fuel and road oils"). The Saybolt Furol method
has largely been supplanted by the
kinematic viscosity method.
Also see viscosity.
Other methods
include Engler viscosity,
Kinematic viscosity, Redwood viscosity, and
Saybolt Universal Seconds (SUS).
Application
Notes:
