Calibration Standard Kit Back Catalog number: 53090 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2604.18-10UG 1,2,3,4-Tetrahydrochrysene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 2091-90-9 Price on request 3355.11-100-CY 2,4-DB methyl ester Price on request 1557.5-K-ME n-Pentane-d12, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2031-90-5 Price on request