Measure the fluidity of your liquids accurately with the viscosity cup
A viscosity cup is an essential tool for measuring the fluidity of a liquid by determining its flow time through a calibrated orifice. Used in the coatings, inks, cosmetics, and lubricants industries, it allows for the evaluation of product consistency and compliance with required viscosity standards.
Easy to use and offering fast results, viscosity cupping is an indispensable instrument for quality control and optimization of industrial formulations.
How does viscosity cutting work?
Viscosity cupping is based on a simple principle: measuring the time it takes for a liquid to flow through a calibrated orifice under the effect of gravity. Its use involves several steps:
- Filling the cup – The liquid is poured up to the maximum level specified by the instrument.
- Flow triggering – The orifice is opened, allowing the liquid to flow freely.
- Flow time timing – The measurement starts as soon as the opening is reached and stops when the flow becomes discontinuous.
- Interpretation of results – The flow time is compared to reference values to determine the viscosity of the liquid.
The choice of the cutting model depends on the viscosity of the liquid being analyzed and the applicable standards in the sector concerned.
Technical characteristics of the viscosity cup
Viscosity cups are available in several models and materials adapted to the requirements of different industries:
- Standards and references : DIN, ISO, Ford, Zahn, Shell, AFNOR, each cup having specific dimensions and openings.
- Materials : Aluminium, stainless steel or plastic, depending on the required chemical resistance.
- Orifice diameter : Varying depending on the model, generally between 1.5 mm and 8 mm.
- Measurable viscosity range : Typically between 10 and 1,000 centistokes (cSt).
- Measurement accuracy : Expressed in seconds, with a low margin of error when used under controlled conditions.
- Measurement temperature : Directly influences the results, sometimes requiring thermal control.
Each cut is calibrated according to specific standards, guaranteeing the repeatability and reliability of the measurements.
For which matrices is the viscosity cup suitable?
Viscosity cutting is particularly effective for analyzing a wide range of liquids, including:
Main industrial applications of viscosity cutting
Viscosity cupping is widely used to ensure the conformity of industrial liquids in various sectors:
viscosity control is a key factor in ensuring product quality and compliance with regulatory requirements.
Léa Géréec
Technical and scientific advisor
