ISO/DIS 25121

Light olefins for industrial use — Determination of trace sulfur — Ultraviolet fluorescence method

General information

Current stage: 40.20 Effective date: Jan 29, 2026

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

Scope

This international standard specifies ultraviolet fluorescence method and microcoulometricic method for the determination of trace sulfur in light olefins.
This document is applicable to determination of sufur in light olefins in the range of 0.2 mg/kg to 100 mg/kg for ultraviolet fluorescence method and 0.5 mg/kg to 100 mg/kg for microcoulometricic method.

Life cycle

NOW

IN_DEVELOPMENT
ISO/DIS 25121
40.20 DIS ballot initiated: 12 weeks
Jan 29, 2026

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