Extended Calibration/Low Level Solution, 200ul, nonane

Benzene, 1000µg/ml in MeOH, 1ml

1-Ethyl-4-(2-methylpropyl)benzene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 100319-40-2

13C6-Sulfamethoxazole, 10mg