BS EN ISO 3924:2019

What is ISO 3924-Determination of boiling range distribution in petroleum products about? 

ISO 3924 is an international standard that serves technical specifications for determination of boiling range distribution to ensure the composition and quality of petroleum products. 

ISO 3924 specifies a method for the determination of the boiling range distribution of petroleum products. The method is applicable to petroleum products and fractions with a final boiling point of 538 °C or lower at atmospheric pressure. 

ISO 3924 describes two procedures: 

• Procedure A allows a larger selection of columns and analysis conditions, such as packed and capillary columns as well as a thermal conductivity detector in addition to the flame ionization detector. Analysis times range from 14 min to 60 min
• Procedure B is restricted to only three capillary columns and requires no sample dilution. The analysis time is reduced to about 8 min

Both procedures have been successfully applied to samples containing fatty acid methyl esters (FAME) up to 20 % (volume fraction). 

Note: ISO 3924 does not apply to - 

• Gasoline samples or gasoline components 

Who is ISO 3924-Determination of boiling range distribution in petroleum products for? 

ISO 3924 on determination of boiling range distribution in petroleum products applies to: 

• Manufacturers of petroleum products 
• Dealers and importers of petroleum products 
• Testing labs for petroleum products 

Why should you use ISO 3924-Determination of boiling range distribution in petroleum products? 

The initial boiling point (IBP) is the temperature at which the first distillation drop emerges, and the final boiling point (FBP) is the temperature at which the last distillation drop appears (EP). The boiling point distribution describes the range at which complicated crude oil mixtures will boil and is critical to the processing, scheduling, and marketing of petroleum products. 

ISO 3924 provides you guidance on principle, reagents, materials, apparatus, sampling, calibration, calculation, precision and test reports which allows you to ensure the structural integrity of petroleum products. 

ISO 3924 provides you guidance on gas chromatography method for the determination of boiling range distribution in petroleum products. ISO 3924 also provides you with a step-by-step procedure for the method which helps ensure that you perform the method correctly. 

What’s changed since the last update? 

BS EN ISO 3924:2019 supersedes BS EN ISO 3924:2016, which is now withdrawn. 

Changes in BS EN ISO 3924:2019 include - 

• The accelerated procedure has been moved from Annex B to the main body text. It is described as Procedure B and has a precision and bias calculation in relation to Procedure A (the original procedure) 
• A new annex has been added with the newly defined boiling points for n-alkanes to keep the method technically equivalent with IP 406 and ASTM D2887 
• Annexes E and F have been added with information on the use of alternative carrier gases 
• Several safety warnings and editorial updates have been made