BS EN ISO 23581:2024

$142.49

Petroleum products and related product. Determination of kinematic viscosity. Method by Stabinger type viscometer

Published By	Publication Date	Number of Pages
BSI	2024	26

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This document specifies a procedure for the determination of kinematic viscosity, ?, by calculation from dynamic viscosity, ?, and density, ?, 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 Clause 13. 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 Clause 13.

PDF Catalog

PDF Pages	PDF Title
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11	7.1 Sampling 7.2 Sample handling 7.2.1 General sample handling 7.2.2 Conditioning of residual fuel oils
12	8.1 General 8.2 Instrument
13	10.1 Measuring procedure
14	10.2 Manual filling and cleaning using syringes 10.3 Manual filling using sample displacement
15	10.4 Automatic filling and cleaning by a sample changer/sample handler 10.5 Procedure for temperature scanning
16	11.1 Kinematic viscosity, dynamic viscosity and density 11.2 Viscosity index 11.3 Density extrapolation
17	13.1 Repeatability, r 13.2 Reproducibility, R
18	13.3 Bias 13.3.1 General
19	13.3.2 Degree of agreement between results by test method ASTM D7042 and test method ASTM D445
20	13.4 Interlaboratory study