Total THC - Performance Test GC Back Catalog number: 38367 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71549 2,2,5,5-Tetramethyltetrahydrofuran Price on request 70954 Azinphos methyl, 1000µg/ml in MeOH, 1ml Price on request 81204 EPA Method 8121 Surrogate Standard Price on request