EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675030 Naphthalene, 250mg Price on request 2543.20-100MG Amitriptyline hydrochloride, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 549-18-8 Price on request A50000753MW EPA Method 1633 PFAS Mix, 10µg/mL in MeOH:Water, 1ml Price on request