Silicon (Si) Back Catalog number: 58014 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30591 p-Xylene Price on request 11716.12-100-IO 2,2',3,5,6'-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 680920 Flupyrsulfuron-methyl, 10.0 µg/ml, Acetonitrile, Price on request