EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50829 Laboratory Spike Solution Price on request 680856 N,N-Diethylanilin, 250mg Price on request 3955.2-1G 1,1,1,2-Tetrachloroethane Price on request