EN 16423:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Sampling
8 Preparation of apparatus
9 Test procedure
10 Calculations
11 Quality control
12 Expression of results
13 Precision
14 Test report
Annex A (normative) - Density calculation of the
        LPG and correction of the result
Annex B (informative) - Quality control monitoring
Annex C (informative) - Analysis of benzene, toluene
        and hydrocarbons C[7] through C[10]
Annex D (informative) - Analysis of di-iso-propanolamine
Annex E (informative) - FID linearity check
Bibliography

This European Standard specifies a method for the determination of the dissolved residual matter, also known as evaporation residue, in liquefied petroleum gases (LPG), by gas chromatography in the range of (10 to 600) mg/kg (ppm mass). This test method quantifies soluble organic compounds (hydrocarbon materials), sometimes called ‘evaporation residue’, which can be present in liquefied petroleum gases and which are substantially less volatile than the LPG product, i.e. with a boiling point between 174 °C and 522 °C (C10 to C40). Higher boiling materials, or materials that adhere permanently to the chromatographic column, will not be detected. WARNING - This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.