Calibration Standard Set Back Catalog number: 53032 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11686.12-100-IO 2,2',3,6-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 72241 L-Proline Price on request 0216.26-10UG Dibenzo[g,p]chrysene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 191-68-4 Price on request