Petroleum Marker Standard Conc Back Catalog number: 95590 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0654.40-500-IO ßß-Carotane, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17161-33-0 Price on request S686752 Stigmasterol-d6 (Major), 2,5mg Price on request 3382.12-100 Dioxathion , 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 78-34-2 Price on request