Description
Viscometer ASTM D445 and D446 is a three-legged capillary instrument for determining the kinematic viscosity of transparent liquids in the range 100–500 mm²/s. It uses capillary number 2B with constant K 0,5 and follows the geometry and working principle associated with ASTM D445 and D446. Approximate overall length is 283 mm, giving a compact format for bath immersion and routine laboratory handling. The glassware is supplied uncalibrated, so users can apply their preferred calibration route before quantitative work. Intended exclusively for transparent fluids, the three-leg layout supports stable positioning during filling, equilibration and efflux timing. This model from manufacturer Witeg is offered as a single piece with a net weight of 0,069 kg, suitable for quality-control, R&D and teaching laboratories that need a defined capillary class and viscosity window without further performance claims. Clear identification of capillary number, K value and measuring range helps match the instrument to sample viscosity and method requirements in standardised kinematic viscosity workflows.
This article is part of Viscometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Length: approx. 283 mm
- Capillary no.: 2B
- Measuring range: 100–500 mm²/s
- Constant K: 0,5
- Suitable for: transparent liquids
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Questions about Viscometer ASTM D445 446 100-500
What is this article?
Viscometer ASTM D445 446 100-500 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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