EPA Method 8040 - Surrogate Standard Back Catalog number: 80403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11913.16-K-AN N-Demethylolanzapine,1000 µg/mL,acetonitrile,1mL, Price on request 82466 EPA Method 8260B Mix #4 Price on request 11490.22-K-IO Di-n-pentyldiphenyltin,1000 µg/mL,isooctane,1mL, Price on request