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ISO/DIS 25121

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

General information

Current stage: 40.60 Effective date: Apr 24, 2026

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.040.40 71.080.10

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

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PROJECT
ISO/DIS 25121
40.60 Close of voting
Apr 24, 2026