EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3387.9-100-IO alpha-Endosulfan, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 959-98-8 Price on request 678356 Pyraclofos, 100 µg/ml, Acetone, 1ml Price on request S-4323-K-TX10 Nitro-PAH Mixture 1 1106,14 9-Nitroanthracene [602-60-8] 1278,16 2-Nitrofluoranthene [13177-29-2] 0025,16 3-Nitrofluoranthene [892-21-7] Concentration: 1000 ppm in Toluene Units: 1mL ampoules Price on request