Interference Standards Set Back Catalog number: 52038 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10636.12-50-T 2,3,4,6,7,8-Hexachlorodibenzofuran Price on request 684693 D9-o-Toluidine, 50mg Price on request 11767.12-100-IO 2,3,3',4,4',5',6-Heptachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request