DIN EN ISO 23581:2024-09

This document has been prepared by Technical Committee ISO/TC 28 "Petroleum and related products, fuels and lubricants from natural or synthetic sources" in collaboration with Technical Committee CEN/TC 19 "Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin", the secretariat of which is held by NEN (Netherlands). The responsible German standardization committee is Working Committee NA 062-06-84 AA "Gemeinschaftsausschuss NA 062-06-42 AA/NA 062-06-61 AA" ("Joint working group NA 062-06-42 AA/NA 062-06-61 AA") of Technical Committee Mineralöl- und Brennstoffnormung (FAM) (Standardization Committee for petroleum, fuels, lubricants and related products (FAM)) at DIN Standards Committee Materials Testing (NMP). 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.