Calibration Mix #1, 200µg/ml in MeOH, 1ml Back Catalog number: 20149 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72267 Tartaric acid Price on request 9697.10-10MG 1,4-Dihydroxynaphthalene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 571-60-8 Price on request 10519.10-K-AN (±)-Nicotine-d3 (N-methyl-d3),1000 µg/mL,acetonitrile,1mL, Price on request