EPA Method 509 Internal Standard Back Catalog number: 30097 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11760.12-100-IO 2,2',3,3',5,6,6'-Heptachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 38239 WP PCBs in Transformer Oil CALA Price on request 95317 Universal VOA Megamix Price on request