Method 504.1LFB Mix Back Catalog number: 94019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92485 Methyl cellosolve Price on request 0711.10-K-IO Naphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 91-20-3 Price on request 673648 Paraoxon-ethyl, 100 µg/ml, Ethyl acetate, 5ml Price on request