Certified Fuel Quality Checkup™ ... Certifying the quality of the diesel fuel and heating oil product that you deliver to your customers as well as protecting your physical assets is critical for optimum fuel system performance. Advanced Fuel Solutions’ Certified Fuel Quality Checkup™ can reveal several important quality issues through periodic sampling and inspection. Early detection of contaminates can eliminate fuel related problems later on which is why the Certified Fuel Quality Checkup services of Advanced Fuel Solutions (AFS) have become so important and widely used by distillate fuel suppliers and consumers nationwide. AFS has been a recognized leader providing investigative fuel services since 1995. Our support team will test your fuel storage sample for: Microbial Contamination, Water Concentration, Cetane Index, Distillation, API Gravity, and Fuel Stability... and we’ll certify the results against industry target limits. When testing indicates that fuel treatment is needed, AFS has immediate and long-term solutions. From moisture-inhibiting fuel additives to broad-spectrum microbicides, our fuel care packages and protocols deliver proven success. For complete details regarding Advanced Fuel Solutions, our Certified Fuel Quality Checkup™, or our fuel additives and treatment, please click here to download our latest brochure [PDF]. AFS Certified Fuel Quality Labsheet (Adobe PDF) No. 2 Diesel Fuel: ASTM D975 Specifications vs. EMA Consensus Position FQP-1A vs. NCWM Premium Diesel Definition (Adobe PDF) Diesel Fuel Properties Comparison (Adobe PDF)