8260 Surrogates / Internals Standard Back Catalog number: 91515 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 56161 Hexavalent Chromium (Cr 6+) Price on request 11166.7-10MG Theobromine,neat,neat,10mg Price on request 2126.12-K-IO Arochlor 1242 , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 53469-21-9 Price on request