EPN Back Catalog number: 79626 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10396.21-50-ME (-)-delta-9-THC-acid-13C4 Price on request 82473 CCC Class I- Method 8261 Price on request EPA-537PDS-R1 EPA Method 537 Analyte Primary Dilution Standard (branched/linear mix), 1.2ml, methanol Price on request