Description
Ubbelohde viscometer IIIa is a precision capillary instrument for kinematic viscosity determination in the measuring range 1000–5000 mm²/s, with viscometer constant K = 5. Intended for routine and quality-control work with Newtonian liquids, it supports standardised efflux-time measurements in analytical and industrial laboratories. Each unit is delivered with a factory calibration certificate, providing documented performance from first use. The design conforms to DIN 51562 Part 1 and ISO 3105, so results remain comparable with established viscosity protocols used in petrochemical, lubricant, polymer and related testing environments. The classic Ubbelohde suspended-level geometry reduces the influence of filled sample volume on measured flow time and helps maintain reproducible determinations across successive runs. Supplied as a single piece from manufacturer Irmeco, the instrument has a net weight of 0,1 kg and is convenient for bench-top handling and storage. Laboratories that require a calibrated capillary viscometer covering the mid-to-high viscosity window will find this size IIIa model a practical addition to existing DIN/ISO viscosity workflows.
This article is part of Viscometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Type: Ubbelohde IIIa
- Measuring range: 1000–5000 mm²/s
- Viscometer constant K: 5
- Calibration: Factory calibration certificate
- Standards: DIN 51562 Part 1, ISO 3105
- Technical Information Sheet:
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What is this article?
Viscometer is the article on this page. Luminix Health distributes Irmeco 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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