Total THC - Performance Test GC Back Catalog number: 38367 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681362 4-Nitrophenol, 1000mg Price on request 30086 EPA Method 507/525 Analyte Mix #5 Price on request 2729.13-K-IO 1-Isopropylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 6158-45-8 Price on request