WA EPH Matrix Spike Mix Back Catalog number: 51145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674698 Fenpyroximate, 100mg Price on request 0214.22-200-T Benzo[b]chrysene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 214-17-5 Price on request 11618.24-100-ME Spironolactone,100 µg/mL,MeOH,1mL, Price on request