Medical Marijuana Heavy Metals Back Catalog number: 55213 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 97790 Internal & Surrogate Standard Price on request 19218 EPA Method 8120 - Analytes Price on request 680247 Ethiprole-sulfone, 100 µg/ml, Acetonitrile, 1ml Price on request