The viscosity of Newtonian fluids can be most precisely determined using capillary viscometers. This method of measurement, measures the time taken for a defined quantity of fluid to flow through a capillary with a known diameter and known length. With the industrial production of such precisely calibrated capillary viscometers, we have created the conditions to enable this measuring method to establish itself worldwide as a reliable procedure.
With the development of the first automatic measuring systems, we replaced the stopwatch with automatic registration of the fluid at the start of the 1970’s. Since then, subjective measuring errors have been a thing of the past.
VISCOMETERS AND THEIR RANGE OF USE
Ubbelohde viscometers, normal form
Ubbelohde viscometers, normal form (ASTM)
Ubbelohde viscometers, with additional tube and threads
Ubbelohde viscometers with TC sensors
Micro-Ubbelohde viscometers, viscometers for dilution series
Cannon-Fenske viscometers
Ostwald viscometers
