ISO/FDIS 23581
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Petroleum products and related products — Determination of kinematic viscosity — Method by Stabinger type viscometer
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14-05-2024
English, French
01-02-2024
This document specifies a procedure for the determination of kinematic viscosity, ν, by calculation from dynamic viscosity, η, and density, ρ, of both transparent and opaque liquid petroleum products and crude oils using the Stabinger type viscometer.
The result obtained using the procedure described in this document depends on the rheological behaviour of the sample. This document is predominantly applicable to liquids whose shear stress and shear rate are proportional (Newtonian flow behaviour). If the viscosity changes significantly with the shear rate, comparison with other measuring methods is not possible except at similar shear rates.
The precision has been determined only for the materials, density ranges and temperatures described in Clause13. The test method can be applied to a wider range of viscosity, density, temperature and materials. It is possible that the precision and bias are applicable for materials which are not listed in Clause13.
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