EPA Method 8040 - Surrogate Standard Back Catalog number: 80403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92768 Semi-Volatile Mix Price on request 2729.13-K-IO 1-Isopropylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 6158-45-8 Price on request 673526 Chlorpyrifos, 100 µg/ml, Ethyl acetate, 5ml Price on request