ASTM D-4815 Internal Standard Back Catalog number: 51072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59532 Arsenic (III) (As) Price on request 679296 Chrysene, 10.0 µg/ml, Acetonitrile, 10ml Price on request 11703.12-100-IO 2,3',5,5'-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request