EPA Method 551.1 Internal Standard Back Catalog number: 32103 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended LGC2611 Zinc - DSC calibration standard, 500mg Price on request 675166 Methabenzthiazuron, 100 µg/ml, Acetonitrile, 5ml Price on request 9690.13-100-ME ( alphaR)-8-Bromo- alpha-methyl-benzo[1,2-b:4,5-b']difuran-4-ethanamine hydrochloride (Bromo-Dragonfly hydrochloride), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 332012-24-5 Price on request