Medical Marijuana Heavy Metals Calibration Back Catalog number: 50712 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 684588 Propoxycarbazone sodium, 100 μg/ml in MeOH, 1ml Price on request 57211 Sodium (Na) Price on request 59040 High Spike 3 - ICP Price on request