8260Matrix Spike Back Catalog number: 97031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 15900-3490-100AN5 Napropamide, 100µg/ml in Acetonitrile, 5ml Price on request C-189N 2,3,3',4,4',5,5'-Heptachlorobiphenyl, 5mg Price on request 680151 1-Heptanol, 1ml Price on request