Selenium (Se) Back Catalog number: 57134 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0204.22-200-T Dibenz[a,j]anthracene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 224-41-9 Price on request 678514 Triazophos, 100 µg/ml, Acetonitrile, 5ml Price on request 1131.11-10MG n-Undecane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1120-21-4 Price on request