EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676646 2-Hydroxyibuprofen, 10mg Price on request 682827 tert-Butylbenzene, 1000mg Price on request 11268.22-100-AN Methoxyfenozide-d9 (3,5-dimethylbenzoyl-d9),100 µg/mL,acetonitrile,1mL, Price on request