Multi-Elements Mix Back Catalog number: 50023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0980.28-100-IO d4 C28 alpha alpha alpha (20R)/C29 alpha alpha alpha (20R)-Methyl/Ethylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request DF-234-S 2,3,4-Trichlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 14500-0115-100AN5 Benzo(a)fluoranthene, 100µg/ml in Acetonitrile, 5m Price on request