ISO 9377-2 MOD Standard Mixture 2 of n-Alkanes and BTEX C7+C8+C9+C10+C20+C40+BTEX in n-Pentane Determination of Hydrocarbon Oil in Water Index 12 Analytes; each 50 µg/mL in n-pentane; units: 1x1 mL, 1x5mL, 10x1mL Chiron No. Name Chiron