Surrogate Standard Back Catalog number: 98775 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 685734 Fensulfothion-oxon-sulfone, 100µg/ml in AL, 1ml Price on request 52326 Gun Shot Residue Price on request EPA-1613CVS EPA Method 1613 Calibration Kit, 5 ampoules, nonane Price on request