Calion Internal Standard Back Catalog number: 50804 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3779.6-K-IO 2-Ethylpyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. 13925-00-3 Price on request N-ETFOSE-M 2-(N-ethylperfluoro-1-octanesulfonamido)-ethanol , 1.2ml x 50ug/ml, methanol Price on request 10249.13-50-ME 2,4-Dihydroxybenzophenone-13C6, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 131-56-6 (unlabelled) Price on request