EPA Method 552.1 - Surrogate Standard Back Catalog number: 31057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3342.8-100-CY Chlorothalonil Price on request L17303300AL Terbuthylazine-desethyl-2-hydroxy, 10µg/ml in Acetonitrile, 10ml Price on request 95092 ASTM Benzene Amp#5 Price on request