EPA Method 552.2 - Surrogate Standard Back Catalog number: 30108 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C16173500 Phthalic acid, bis-iso-butyl ester, certified, 0.25g Price on request 681984 5-Methyl-2-phenyl-4-(phenylhydrazinylidene)pyrazol Price on request PFRS-014S Tri(2-isopropylphenyl) phosphate, 100µg/ml in Toluene, 1ml Price on request