EPA Method 552.2 - Surrogate Standard Back Catalog number: 30109 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95241 Primary Freon Standard Price on request 11908.20-1G Fluorescein (free acid),neat,neat,1g, Price on request C16179100 Phthalic acid, n-pentyl-isopentyl ester, certified, 0.1g Price on request