Description
Viscometer ASTM D445 and D446 is a calibrated three-legged capillary instrument for kinematic viscosity determination of transparent liquids in the 10–50 mm²/s measuring range. It is adjusted and calibrated in accordance with ASTM D445 and D446 as well as ISO 3104 and ISO 3105, and is identified as size Nr. 1B with viscometer constant K 0,050. Approximate overall length is 283 mm, matching common thermostatic bath geometries used for capillary viscometry. The unit is intended for transparent liquids so that the meniscus can be observed clearly during timing. Pack size is 1 pc, with a net weight of 0,081 kg and a matching gross weight of 0,081 kg. Laboratories choose this tube when expected sample viscosities fall between 10 and 50 mm²/s, keeping efflux behaviour within the windows of the cited ASTM and ISO methods. Available from manufacturer Witeg, the instrument supports routine analytical and quality-control work that relies on standardised capillary viscosity measurement of clear fluids under the referenced protocols.
This article is part of Viscometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Measuring range: 10–50 mm²/s
- Viscometer constant K: 0,050
- Size number: 1B
- Length: approx. 283 mm
- Design: three-legged, calibrated
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Questions about Viscometer ASTM D445 446 10-50mm²/s
What is this article?
Viscometer ASTM D445 446 10-50mm²/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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