Calibration Standard Mix 4 Back Catalog number: 53036 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9386.21-K-ME (±)-trans-11-Nor-9-carboxy-delta-9-THC, 1000µg/ml in MeOH, 1ml Price on request 71524 1,2,3,5-Tetramethylbenzene Price on request 95290 DWSD Mix Price on request