8260Matrix Spike Back Catalog number: 97031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1516.9-K-IO 3-Ethyl-5-methylphenol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 698-71-5 Price on request 72123 Cefaclor Price on request E0018 Ergosterol, >95%, 5g Price on request