EPA 1638Mix A Back Catalog number: 52144 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10216.10-100-ME n-Propyl 4-hydroxybenzoate-2,3,5,6-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219802-67-1 Price on request 94004 Pyrene Price on request 678696 EPTC, 100 µg/ml, Acetonitrile, 1ml Price on request