525.2 Internal & Surrogate Standard Back Catalog number: 92386 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 20142 GPC Calibration Solution Price on request C-090N 2,2',3,4',5-Pentachlorobiphenyl, 5mg Price on request 676619 2-Methoxy-5-methylaniline, 250mg Price on request