EPA Method 502/524 Volatile Standard Back Catalog number: 97985 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2776.10-100-DC Heptachlor, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 76-44-8 Price on request 678106 Pyrazophos, 100 µg/ml, Acetonitrile, 1ml Price on request 10632.12-50-T 2,3,4,7,8-Pentabromodibenzofuran Price on request