We supply precise Sulfur in Isooctane Standards Conostan for your laboratory. Conostan developed these very low, low, and middle concentration lines. These specific fluids strictly follow multiple ASTM testing methods. Specifically, they comply with D5453, D4294, D6334, D3120, and D3246. They also meet ASTM D396, D4045, D6212, D6313, and D6428. Technicians use these standards to analyze sulfur in gasoline. You can also confidently apply them to other petroleum products. The table below clearly displays our completely stocked concentrations.