Description
Ostwald viscometer 509 07 is a classical capillary instrument for determining the kinematic viscosity of Newtonian liquids in research and quality-control laboratories. Supplied not calibrated, it carries a capillary constant K = 0,1 and is intended for users who perform their own calibration or work with relative viscosity comparisons. The Ostwald design relies on gravity-driven flow through a defined capillary, enabling straightforward timing of liquid transit between marked levels. This model from SI Analytics – a Xylem brand is well suited for teaching laboratories, method development and routine viscosity checks of transparent fluids under controlled temperature conditions. Compact glass construction supports immersion in a thermostatic bath for stable measurement. Delivered as a single unit, the viscometer integrates easily into existing viscosity workflows alongside stopwatches or automated timing systems. It provides a practical, cost-effective option whenever an uncalibrated Ostwald capillary with constant K = 0,1 is specified for laboratory viscosity determination.
This article is part of Viscometers, in Density & viscosity measurement.
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509 07, Ostwald viscometer, not calibrated, constant K = 0.1 is the article on this page. Luminix Health distributes SI Analytics - a Xylem brand for laboratory use. It sits in Viscometers, inside Density & viscosity measurement, in Lab instruments.
A capillary viscometer times the flow of a liquid through a tube. A rotational viscometer twists a spindle in the liquid. Both need a stated temperature. Kinematic and dynamic viscosity are different numbers. The capillary size has to put the flow time in the range the method allows.
Density is mass divided by volume. A hydrometer floats at a depth that depends on the density of the liquid. A pycnometer is a vessel of known volume that is weighed full. Viscosity is the resistance to flow. A capillary viscometer times how long a volume takes to fall through a tube. Both measurements need a stated temperature, because liquids change density and viscosity as they warm. The units trace to the BIPM and to NIST.
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The category is Density & viscosity measurement. The sub-category is Viscometers. The catalogue is Lab instruments.
Shelves beside this one are Hydrometers and Density meters & pycnometers.
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