EPA Method 552.1 - Surrogate Standard Back Catalog number: 31057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54197 BOD Calibraton Standard Price on request 682621 Dibutyl sebacate, 1000mg Price on request 11095.10-10MG 2-Ethyl-6-isopropylpyridine,neat,neat,10mg Price on request