ASTM 7371 Biodiesel (FAME) content in diesel fuel by FTIR

Measuring the amount of biodiesel in diesel fuel is well characterized by FTIR.
There are two established methods for taking these measurements, ASTM 7371 and EN 14078, each with their own set of parameters. Both of these methods can be easily run on the Cary 630 FTIR by simply changing the sampling interfaces and loading the appropriate method.


ASTM 7371
This method allows the amount of biodiesel in diesel to be measured from 0-100% by utilizing a multi-bounce ATR.

EN 14078
This method allows for the amount of biodiesel in diesel to be measured from 0-10%. The method makes use of a 200 μm pathlength cell to measure the carbonyl band at 1745 cm-1.

Agilent turn-key Biodiesel Analyzers

The Cary 630 is the most suitable choice for users needing to measure biodiesel content by both the ASTM and EN methods, or for users doing other types of analysis in addition to biodiesel measurement.

Agilent also offers two analyzers for dedicated measurement of biodiesel by FTIR according to the ASTM or EN methods that are suitable for both routine and mobile measurement. The Agilent portable 4500 FTIR and 5500 FTIR provide single, turn-key solutions for measuring biodiesel.

These analyzers come fixed with either a multi-bounce ATR or TumblIR sampling interface. The 4500 FTIR can be battery operated, enabling it to be taken into the field for at-site analysis. The 5500 FTIR is a robust, industrial FTIR analyzer that can be used either in the lab or on the manufacturing floor.

With both the 4500 and 5500, you receive validated EN and ASTM methods, eliminating the need to develop your own calibration curves which can be a significant process.



Posted on

17 December, 2016