Retention Time Verification Standard Back Catalog number: 51136 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72289 p-Xylene-d10 Price on request PCB-LCS-A1 Mass-Labelled PCB Solution/Mixture , 1.2ml, nonane Price on request BP-MS Native PCB Solution/Mixture for MS Detection, 1.2ml, nonane Price on request