Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9069.7-K-IP 4,6-Dichloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 16766-31-7 Price on request 672912 Flurochloridone, 250mg Price on request EN-1948CSAV Calibration Kit; Alternate Volume, 6 x 200ul, nonane Price on request