| ASTM
D445 Standard Test Method for Kinematic Viscosity of
Transparent and Opaque Liquids (the Calculation of
Dynamic Viscosity) |
The time is measured for a fixed volume of liquid to
flow under gravity through the capillary of a calibrated viscometer
under a reproducible driving head and at a closely controlled and known
temperature. The kinematic viscosity (determined value) is the product
of the measured flow time and the calibration constant of the
viscometer. Two such determinations are needed from which to calculate a
kinematic viscosity result that is the average of two acceptable
determined values. |
| ASTM
D446 Standard Specifications and Operating
Instructions for Glass Capillary Kinematic
Viscometers |
| ASTM D2170 Standard Test Method
for Kinematic Viscosity of Asphalts (Bitumens) |
The time is measured for a fixed volume of the liquid to
flow through the capillary of a calibrated glass capillary viscometer
under an accurately reproducible head and at a closely controlled
temperature. The kinematic viscosity is then calculated by multiplying
the efflux time in seconds by the viscometer calibration factor. |
