8260Matrix Spike Back Catalog number: 97031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4451-SET2 ISO 9377-2 Calibration Mixture of BAM-K10 in Pentane Kit Cat. No. S-4451-SET2 Concentrations: Blank 50mg/L 100mg/L 200mg/L 500mg/L 1000mg/L 6x5mL The previously lowest concentration of 10mg/L has been discontinued and the set is from 2009 on deli Price on request 54148 WS Sulphate / TOC Price on request MHCH-MXA Mass-Labelled HCH Solution/Mixture, 2µg/ml in Nonane, 1,2ml Price on request