WS Amp 1 Trace Elements Back Catalog number: 52127 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2232.7-100-AN Patulin, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 149-29-1 Price on request 12114.4-100-ME Metformin-d6 hydrochloride (dimethyl-d6),100 µg/mL,MeOH,1mL, Price on request GLC-744 GLC Reference standard 744, 100mg Price on request