Verification II Standard 1 Back Catalog number: 53019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677344 8,9-Z-Avermectin B1b, 100 µg/ml, Acetonitrile, 1 Price on request 72281 L-Tryptophan Price on request MCDE-180 2,2',3,4,4',5,5'-Heptachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane Price on request