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Homepage>BS Standards>75 PETROLEUM AND RELATED TECHNOLOGIES>75.080 Petroleum products in general>BS EN ISO 18335:2024 Petroleum products and related products. Determination of kinematic viscosity by calculation from the measured dynamic viscosity and density. Method by constant pressure viscometer
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immediate downloadReleased: 2024-02-13
BS EN ISO 18335:2024 Petroleum products and related products. Determination of kinematic viscosity by calculation from the measured dynamic viscosity and density. Method by constant pressure viscometer

BS EN ISO 18335:2024

Petroleum products and related products. Determination of kinematic viscosity by calculation from the measured dynamic viscosity and density. Method by constant pressure viscometer

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Standard number:BS EN ISO 18335:2024
Pages:16
Released:2024-02-13
ISBN:978 0 539 24397 0
Status:Standard
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BS EN ISO 18335:2024


This standard BS EN ISO 18335:2024 Petroleum products and related products. Determination of kinematic viscosity by calculation from the measured dynamic viscosity and density. Method by constant pressure viscometer is classified in these ICS categories:
  • 75.080 Petroleum products in general
This document specifies a procedure for determining dynamic viscosity, ?, and density, ?, for the calculation of kinematic viscosity, ?, of middle distillate fuels, fatty acid methyl ester fuels (FAME) and mixtures thereof, up to 60 % with middle distillate fuels, and lubricating oils (e.g. base oils, formulated oils), and synthetics, using a constant pressure viscometer. The range of kinematic viscosities covered in this test method is from 0,5 mm2/s to 2 000 mm2/s, with precision at 40 °C from 1,0 mm2/s to 1 286 mm2/s, and precision at 100 °C from 3,0 mm2/s to 157 mm2/s. 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). However, if the viscosity changes significantly with the shear rate, comparison with other measuring methods is only permissible at similar shear rates.