Internal Standard Back Catalog number: 95592 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0030.26-200-T Dibenzo[b,k]chrysene, Inquire, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 217-54-9 Price on request 52144 EPA 1638Mix A Price on request 59610 IC Anions Cal Std - COA Level 2 Price on request