EPA Method 8140/8141 Analytes Back Catalog number: 81400 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 57429 Copper (Cu) Price on request 0407.28-150-CY n-Octacosane, ?13C: -29.85, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 630-02-4 Price on request T293295 delta 9-Tetrahydrocannabivarol, 5mg Price on request