Reference Fish Tissue Extract (Isooctane/20% Salmon Oil), 3g, Isooctane Back Catalog number: WMF-EX Availability: In the manufacturer's stock Price on request - + Recommended 30047 EPA Method 548 Analyte Price on request 55112 SDWA Hexavalent Chromium Price on request 95219 Organochlorine Pesticides Price on request