Streamlining Biofuel Analysis: Fast and Reliable Quality Control with CDR FoodLab®

The growing demand for sustainable energy has made biofuels, such as biodiesel, a crucial alternative to conventional petroleum diesel. Produced through the transesterification of vegetable oils, animal fats, and increasingly, waste-derived feedstocks like used cooking oil, biodiesel quality is directly linked to its chemical composition. To ensure compliance with international standards (like ASTM D6751 and EN 14214) and reliable engine performance, rigorous quality control and stability monitoring of these oils and fats are essential.

Assessing the suitability and quality of feedstocks requires monitoring three critical parameters: Free Fatty Acid (FFA) content, Iodine Value (IV), and Peroxide Value (PV).

• FFA indicates degradation; levels above 1% can cause soap formation during production, reducing biodiesel yield and complicating downstream purification. The official determination of FFA is performed by acid–base titration, typically according to standardized procedures such as ASTM D664 for acid number determination.
• Iodine Value measures the degree of unsaturation, which is crucial for balancing low-temperature fluidity with resistance to oxidative degradation. The conventional determination of iodine value is performed using halogen addition methods, typically the Wijs method, followed by titration of excess iodine with sodium thiosulfate.
• Peroxide Value reflects early-stage lipid oxidation and helps determine storage conditions and shelf life. The official determination of peroxide value is based on iodometric titration, as described in standard methods such as ISO 3960 or AOCS Cd 8b-90. Peroxides present in the oil oxidize iodide ions to iodine, which is then titrated with standardized sodium thiosulfate. Results are expressed as milliequivalents of active oxygen per kilogram of oil.

However, traditional official determination methods rely on complex titrations. These conventional methods require significant sample preparation, the handling of hazardous solvents, and highly skilled laboratory personnel. This complexity often leads to longer turnaround times, creating bottlenecks during raw material acceptance and process control.

To eliminate these inefficiencies, the CDR FoodLab® system offers a practical, industry-friendly solution designed to cut through analytical complexity. It helps producers make rapid, confident decisions without the hassle of traditional lab setups.

• Unmatched Speed and Simplicity: Unlike traditional titration, CDR FoodLab® requires minimal sample treatment and uses ready-to-use reagents. It delivers accurate results within minutes, enabling rapid decision-making across all production stages.
• Enhanced Safety: The system utilizes an advanced photometric approach. This not only ensures reliable and repeatable measurements but also drastically limits operator exposure to hazardous chemicals.
• Versatile and Compact: Designed to be suitable for both dedicated analytical laboratories and active production environments.
• Reliable: The instrument ensures results in accordance with reference methods. 

By adopting CDR FoodLab®, biofuel producers can achieve fast, accurate, and regulatory-aligned analysis, directly contributing to improved process efficiency, cost control, and consistent fuel quality.

In conclusion, navigating the complexities of biofuel quality control doesn't have to be a production bottleneck. By replacing cumbersome traditional titrations with the rapid, photometric approach of the CDR FoodLab® system, you can streamline your workflow from raw material acceptance to final process control. This compact, industry-friendly solution not only ensures safety by limiting exposure to hazardous chemicals, but also empowers your team to make fast, accurate decisions directly on the production floor without the need for highly skilled laboratory personnel. Ultimately, integrating CDR FoodLab® into your operations translates to enhanced process efficiency, better cost management, and consistently high-quality biodiesel.

American Oil Chemists’ Society (AOCS). (n.d.). Official Method Cd 8b-90: Peroxide Value, Acetic Acid–Isooctane Method. Champaign, IL, USA: AOCS.

ASTM International. (n.d.). ASTM D664 – Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration. West Conshohocken, PA, USA: ASTM International.

ASTM International. (n.d.). ASTM D6751 – Standard Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels. West Conshohocken, PA, USA: ASTM International.

European Committee for Standardization (CEN). (n.d.). EN 14214 – Liquid petroleum products – Fatty acid methyl esters (FAME) for use in diesel engines – Requirements and test methods. Brussels, Belgium.

International Organization for Standardization (ISO). (n.d.). ISO 3960 – Animal and vegetable fats and oils – Determination of peroxide value – Iodometric (visual) endpoint determination. Geneva, Switzerland: ISO.

Canesin, E. A., Oliveira, C. C., Matsushita, M., Dias, L. F., Pedrão, M. R., & Souza, N. E. (2014). Characterization of residual oils for biodiesel production. Electronic Journal of Biotechnology, 17(1). https://doi.org/10.1016/j.ejbt.2013.11.001

Kumar, M., & Sharma, M. P. (2016). Selection of potential oils for biodiesel production. Renewable and Sustainable Energy Reviews, 56, 1129–1138. https://doi.org/10.1016/j.rser.2015.12.032

Umeh, S. I., & Okonkwo, P. A. (2025). The essential properties of oils for biodiesel production. IntechOpen. https://doi.org/10.5772/intechopen.1008694