One 2 mL flame-sealed ampule in methanol requires spiking onto the provided ten grams of solid matrix before analysis. Use with EPA Methods 8021, 8260, or other applicable methods. Includes a subset of the analytes listed below at 20–200 ?g/kg (40–400 ?g/kg for total xylenes, 80–1000 for selected ketones,
and 100–1000 ?g/kg for acetonitrile).