EPA Method 515.1 Surrogate Standard Back Catalog number: 30022 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1108.13-200-T 2-Nitrofluorene, 200ug/mL in Toluene, 1ml Price on request 677477 Triphenylmethane, 250mg Price on request 72450 Chlorimuron ethyl Price on request