Calibration Standard Mix 2 Back Catalog number: 52011 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682235 2,2',4,4'-Tetrahydroxybenzophenone, 500mg Price on request 8765.8-K-IO 2-Ethyl-3,(5/6)-dimethylpyrazine, Isomer mixture, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. 27043-05-6 or 55031-15-7 Price on request 10857.20-K-ME Quinine hemisulfate,1000 µg base/mL,MeOH,1mL Price on request