Perchlorate Level 4 Back Catalog number: 59342 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1540.12-K-TX5 4-Aminobiphenyl-d9, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 344298-96-0 Price on request 2995.9-K-CY 3,4-Dimethylheptane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 922-28-1 Price on request X9008 Acrylonitrile Price on request