Medical Marijuana Heavy Metals Calibration Back Catalog number: 50712 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended A12507509AL-100 trans-Permethrinic acid, 100µg/mL in Acetonitrile, 1ml Price on request 93064 Phenanthrene - 20% Price on request 1131.11-10MG n-Undecane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1120-21-4 Price on request