Ciprofloxacin, 1000µg/ml in 0,1mol/l HCl, 1ml

GC-IRMS Standards (C15 (?13C: -30.22); C20 (?13C: -33.06); C25 (?13C: -28.21)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no.

Metformin-d6-HCl, 100µg/ml in Acetonitrile, 1ml

4,4''-Dinitro-p-terphenyl, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3282-11-9