Description
Viscometer ASTM D445/D446 for the measuring range 20000–100000 mm²/s is a calibrated, three-legged capillary instrument for kinematic viscosity testing of transparent liquids. It is adjusted according to ASTM D445 and D446 together with ISO 3104 and 3105, enabling compliant laboratory viscosity work at higher viscosities. Size No. 5 features a viscosity constant K of 100000 and an approximate length of 283 mm, matching common bath depths used in capillary viscometry. The three-leg design helps keep the tube stable during immersion while the meniscus of clear samples is observed and timed. Supplied as 1 pc with a net weight of 0,082 kg, this model from manufacturer Witeg is calibrated across 20000–100000 mm²/s and is specified for transparent fluids only. It is suited to quality control and research laboratories measuring viscous oils, polymer solutions and other clear liquids that fall within this elevated range under ASTM and ISO protocols. The instrument slots into standard temperature-bath and stopwatch workflows without special adapters.
This article is part of Viscometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Measuring range: 20000–100000 mm²/s
- Size No.: 5
- Viscosity constant K: 100000
- Length: approx. 283 mm
- Design: Three-legged, calibrated, for transparent liquids
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Questions about Viscometer ASTM D445 446 20000-100000mm²/s
What is this article?
Viscometer ASTM D445 446 20000-100000mm²/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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