8021 Internal & Surrogate Standard Back Catalog number: 92492 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11728.12-100-IO 2,3',4,5',6-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 1900.18-100-T 1-Fluorochrysene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. Price on request 70255 Pronamide Price on request