Butralin, 10.0 µg/ml, Ethyl acetate, 10ml

(S)-(-)-Cotinine, 1000µg/ml in MeOH, 1ml

525.2 Calibration Standard

n-Propyl 4-hydroxybenzoate-2,3,5,6-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219802-67-1