Strontium (Sr) Back Catalog number: 56138 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94810 PCB Congeners Price on request 2522.8-K-ME 4-Hydroxyphenylacetic acid, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 156-38-7 Price on request 3494.11-100-CY Propoxur Price on request