Erbium (Er) Back Catalog number: 57068 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2181.42-10MG n-Dotetracontane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 7098-20-6 Price on request 1605.12-50-IO 4-Fluorodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 330-84-7 Price on request 70401 o-Toluidine Price on request