MA - EPH Matrix Spike Back Catalog number: 92113 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66214 Group 3 PCB’s - Low Toxicity Congeners Price on request 3338.12-100-CY Chlorfenvinphos, 100µg/mL, Solvent-c.hexane, Unit 1mL, # of units-1, Cas.no. 470-90-6 Price on request 82459 Method 8085 Surrogates Price on request