AnalytiChem Blog

Expanded CONOSTAN® Fuel Testing Portfolio: Supporting ASTM D3606 with Confidence

Written by AnalytiChem | Jul 30, 2026, 2:12:54 PM

In fuel testing, confidence starts with the quality of the reference material. 

In this article, you'll learn:

  • What ASTM D3606 measures, and why accurate benzene and toluene quantification matters for fuel compliance
  • Why calibration quality is critical when test results inform reporting or release decisions
  • How CONOSTAN’s newest standards for ASTM D3606 were developed, and what accreditation underpins them
  • How consolidating reference material sourcing with a single supplier supports consistency across fuel testing parameters

Whether you are overseeing a high-throughput commercial lab or managing internal quality control for a refinery, the integrity of your data hinges on the quality of your reference materials. That’s why we have expanded our CONOSTAN fuel testing portfolio to include new standards developed to support ASTM D3606 workflows.

Meeting the Demands of ASTM D3606

The fuel industry is constantly evolving to meet new performance benchmarks. In some cases, the additives used to maximize fuel performance have environmental or health risks. Accurate, traceable data allows fuel producers to strike the perfect balance between high-performance engineering and ecological responsibility.

For example, benzene and toluene serve as key components for boosting octane ratings and preventing engine knock, but their properties have led to strict global regulations. In practical terms, that means laboratories need a method they can trust, and reference materials that help them execute that method consistently.

ASTM D3606 provides a rigorous, standardized method for measuring benzene and toluene levels in fuel and it's been the industry's go-to standard for this for over 30 years. Backed by an interlaboratory study compliant with ASTM D6300, it continues to deliver data that's reliable and suitable for reporting and decision-making.

When those results are used to support reporting, release decisions, or internal process control, calibration quality becomes critical. Our newest standards for ASTM D3606, produced under our ISO 17034 accreditation, were designed to help you optimize instrument performance and meet the industry-accepted requirement outlined in the method. By integrating these precise tools into your routine, you can ensure the high-stakes accuracy that your stakeholders demand, while reducing recalibration downtime and technical guesswork.

Your Partner for Fuel Analysis

The ongoing expansion of the CONOSTAN portfolio of fuel testing products isn’t just about adding new part numbers; it’s about completing the puzzle. These products complement our existing portfolio, including our range of Sulfur CRMs.

Managing a laboratory is complex enough without having to juggle multiple vendors for different testing parameters. By consolidating your reference material sourcing with AnalytiChem, you ensure a uniform level of quality across your entire testing suite. Whether you are analyzing sulfur content or running ASTM D3606, you now have a single, trusted partner providing a cohesive ecosystem of standards for fuel analysis.

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