Viscosity

SIA_Applikation_VISKO_1.jpgViscosity is a physical property of liquids and describes the force, which is necessary for its agitation (shearing). A special case are Newtonian liquids, whose viscosity is independent on shear conditions. The most accurate instruments – and therefore the reference technique – to determine the viscosity of such Newtonian liquids are glass capillary viscometers. Some advantages are the high chemical resistance and low thermal expansion of the DURAN® glass, which results in a calibration valid for years and nearly independent on temperature.

As viscosity depends strongly on temperature, precise viscosity measurement always requires precise temperature control ±0,02°C.
Capillary viscometer are especially used for petrochemical products, in polymer analytics (viscosity number, intrinsic viscosity) and in pharmacy.

DIN Ubbelohde Viscometer

DIN Ubbelohde Viscometer

Calibrated for manual measurement with stopwatch 

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DIN Ubbelohde Viscometer without ventilation pipe

DIN Ubbelohde Viscometer without ventilation pipe

Calibrated for automatic measurement with AVS® meters and ViscoClock plus 

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ViscoClock plus

ViscoClock plus

Electronic timepiece for glass capillary viscometers 

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AVS® 470

AVS® 470

Automatic viscosity meter for stand-alone operation without PC 

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Transparent thermostat CT 72

Transparent thermostat CT 72

For viscosity measurement with glass capillary viscometers 

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Flow-through-cooler CK 310

Flow-through-cooler CK 310

For counter cooling of bath thermostats 

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AVS® 370 Viscosity Measuring System

AVS® 370 Viscosity Measuring System

Package with thermostat, cooler and waste system incl. vacuum pump 

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Viscometry Handbook

Viscometry Handbook

Theory and practice of viscometry with glass capillary viscometers 

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