Surrogate Standard Back Catalog number: 98607 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PFHXPA Perfluorohexylphosphonic acid, 1.2ml x 50ug/ml, methanol Price on request 19094 EPA Method 601 Internal Standard Price on request C-113N 2,3,3',5',6-Pentachlorobiphenyl, 5mg Price on request