ASTM D-4815 Internal Standard Back Catalog number: 51072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92835 Volatile Mix Price on request 11732.12-100-IO 2,2',3,3',4,5-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 72285 L-Valine Price on request