Description
Ubbelohde viscometer 500-5000 mm²/s is a DIN-type capillary instrument intended for kinematic viscosity determination in the measuring range 500–5000 mm²/s. It corresponds to size No. IIIa, with an internal diameter of 3,00 mm and a printed constant K of 5 for evaluation of measured flow times. The printed constant and overall design are specified in accordance with ISO/DIN 3105, DIN 51502, BS 188 and KFT 60-100. Supplied uncalibrated and four-legged, the glassware is prepared for use in a thermostatic bath where precise temperature control underpins repeatable capillary timing. This model from manufacturer Witeg comes as a single piece with a net weight of 0,079 kg, suitable for everyday laboratory handling. The four-limb arrangement facilitates sample introduction, visual timing and subsequent cleaning. Laboratories working with more viscous Newtonian liquids within the stated range can employ this size alongside other Ubbelohde capillaries in a graded set. Size designation, constant and reference standards are marked to support clear records when converting efflux times into kinematic viscosity values under defined bath conditions for routine or investigative measurements.
This article is part of Viscometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Type: Ubbelohde DIN, four-legged
- Size: No. IIIa
- Measuring range: 500–5000 mm²/s
- Internal diameter: 3,00 mm
- Constant K: 5
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Questions about Ubbelohde viscometer 500-5000mm²/s
What is this article?
Ubbelohde viscometer 500-5000mm²/s is the article on this page. Luminix Health distributes Witeg 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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