552.2Mix Back Catalog number: 95620 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0049.20-100-T 6-Nitrobenzo[a]pyrene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 63041-90-7 Price on request 675248 Proquinazid, 100 µg/ml, Acetonitrile, 5ml Price on request 676370 Tridecafluorohexane-1-sulfonic acid potassium salt Price on request