Chromium (Cr) Back Catalog number: 57224 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0345.19-K-IO 4-n-Heptylbiphenyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 59662-32-7 Price on request 30109 EPA Method 552.2 - Surrogate Standard Price on request 1801.24-100-T p-Quaterphenyl, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 135-70-6 Price on request