Roxithromycin-d7, 2,5mg

1H,1H,2H,2H-Perfluorotetradecan-1-ol (12:2 FTOH), 50μg/ml in MeOH, 1ml

2-Methylchrysene, 10µg/mL in Acetonitrile, 10ml

ISO 9377-2 Standard Mixture of n-Alkanes C20-C40 (all even) Determination of Hydrocarbon Oil in Water Index 11 Analytes, each 50µg/mL in n-Pentane, units: 1x1mL, 1x5mL, 10x1mL This standard is also available as 50µg/mL in n-hexane; units 1x1mL, 1x5