ISO/DIS 25564

Petroleum and related products-Determination of the ignition quality of diesel fuels — Air flow regulation method ISO/DIS 25564

General information

40.60   Close of voting   Aug 4, 2026

ISO

ISO/TC 28 Petroleum and related products, fuels and lubricants from natural or synthetic sources

International Standard

75.160.20   Liquid fuels

Scope

This document specifies a method for the determination of cetane number of diesel fuels by air flow regulation in a standard test engine.
This document is applicable to various types of diesel fuels, including vehicle diesel, bio-diesel, synthetic diesel, and similar unconventional products. The cetane number measurement range is from 0 CN to 100 CN, whereas a typical cetane number range of 25 CN to 70 CN. However, the precision for synthetic and unconventional diesel has not been established.

Life cycle

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ISO/DIS 25564
40.60 Close of voting
Aug 4, 2026




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