Description
Micro-Ostwald viscometer 518 13 is an uncalibrated laboratory instrument for determining the viscosity of liquids via capillary flow, equipped with capillary number Ic and characterised by the constant K = 0,03. This micro-scale Ostwald design supports precise timing of sample passage under controlled conditions, enabling calculation of kinematic viscosity for Newtonian fluids in research and quality-control settings. Supplied as 1 pc with a net weight of 0,275 kg, the compact glassware integrates readily into standard thermostatic baths and viscosity measurement workflows. The uncalibrated configuration allows laboratories to establish their own calibration factors according to specific methods or reference standards. Physical handling benefits from the moderate weight and dedicated micro-volume geometry suited to limited sample quantities. Manufactured by SI Analytics - a Xylem brand, the viscometer serves applications in analytical chemistry, polymer characterisation and routine fluid testing. Its capillary specification and constant define a practical working range for many common laboratory solvents and solutions, delivering reproducible flow behaviour when temperature is properly regulated.
This article is part of Viscometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Model: 518 13
- Type: Micro-Ostwald viscometer
- Capillary no.: Ic
- Constant K: 0,03
- EAN: 4064664035866
- Technical Information Sheet:
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Questions about 518 13, Micro-Ostwald viscometer, not calibrated, Capillary No. Ic, Constant K =
What is this article?
518 13, Micro-Ostwald viscometer, not calibrated, Capillary No. Ic, Constant K = 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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Shelves beside this one are Hydrometers and Density meters & pycnometers.
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