Imipenem monohydrate, 50mg

alpha alpha alpha (20R 24R)-24-Methylcholestane and alpha alpha alpha (24R 24R)-24-Ethylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 50897-35-3/62446-14-4

Quinalphos, 100 µg/ml, Acetonitrile, 1ml

2,4,6-Tribromophenol, 100µg/ml in MeOh, 5ml