EN ISO 6974-3:2018
Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 3: Precision and bias (ISO 6974-3:2018)

Standard No.

EN ISO 6974-3:2018

Release Date

2018

Published By

European Committee for Standardization (CEN)

Status

Withdraw 2019-05

Latest

EN ISO 6974-3:2018

Scope

This document describes the precision that can be expected from the gas chromatographic method that is set up in accordance with ISO 6974-1. The stated precision provides values for the magnitude of variability that can be expected between test results when the method described in ISO 6974-1 is applied in one or more competent laboratories. This document also gives guidance on the assessment of bias.

EN ISO 6974-3:2018 history

• 2018 EN ISO 6974-3:2018 Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 3: Precision and bias (ISO 6974-3:2018)
• 2001 EN ISO 6974-3:2001 Natural Gas - Determination of Composition with Defined Uncertainty by Gas Chromatography - Part 3: Determination of Hydrogen, Helium, Oxygen, Nitrogen, Carbon Dioxide and Hydrocarbons up to C8 Using Two Packed Columns