Calibration Standard Mix 4 Back Catalog number: 52046 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2543.20-K-ME Amitriptyline hydrochloride, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 549-18-8 Price on request 11724.12-100-IO 2,3,3',5',6-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 72123 Cefaclor Price on request