ASTM D-4815 Internal Standard Back Catalog number: 51072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended HPCB-2004N 4-Hydroxy-3,5-dichlorobiphenyl, 10mg Price on request 681309 4-Isopropylaniline, 100 µg/ml, Methanol, 5ml Price on request 678501 Siduron, 100 µg/ml, Acetonitrile, 1ml Price on request