Standard is packaged in purge-and-trap-grade methanol at a concentration of 2500 µg/mL in a 1 mL ampoule.

• Gasoline standards may exhibit lot-to-lot variation
• Unleaded gasoline composite standards comprise three separate sources each of 87, 89, and 93 octane blended in equal portions

Each standard includes an ampoule breaker, deactivated amber screw-top vial, extra product label, Certificate of Analysis, and Material Safety Data Sheet (MSDS). Samples of regular and premium grade unleaded gasoline were collected from three different sources (six samples total). Equal volumes of each were blended to form a composite unleaded gasoline sample. The composite blend was then used to produce the standard listed.