Spiking Standards Kit Back Catalog number: 53073 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 58279 Gold (Au) Price on request 0256.22-200-T Anthanthrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 191-26-4 Price on request 1579.4-K-ME Metformin hydrochloride, 1000µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1115-70-4 Price on request