EPA Method 524.3 - Internal Standard Back Catalog number: 95488 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676367 Tricosafluorododecanoic acid, 100mg Price on request 8423.10-100MG Pyrazon, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 1698-60-8 Price on request 678115 Benzyldimethylhexadecylammonium chloride, 100 µg/m Price on request