EPA Method 524.3 - Surrogate Standard Back Catalog number: 95489 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PFEESA Potassium perfluoro(2-ethoxyethane)sulfonate, 1.2ml x 50ug/ml, methanol Price on request 680790 Spirotetramat-mono-hydroxy, 10.0 µg/ml, Acetonitr Price on request 70921 3,3’-Dimethoxybenzidine Price on request