EPA Method 8240A - Purgeable Surr Std Back Catalog number: 20002 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12068.11-250MG Sulfamerazine,neat,neat,250mg, Price on request 92349 SS Aroclor Standard Mix 1 Price on request 72072 n-Tetracosane-d50 Price on request