Primary Calibration PID (VPH) Back Catalog number: 91784 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0643.28-100-IO alphaßß (20R,24S)-24-Methylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 71117-90-3 Price on request 59522 IC Cations Mix Price on request 8568.20-10MG Benzo[a]pyrene, Comet assay grade, , Solvent-, Unit , # of units-, Cas.no. 50-32-8 Price on request