EPA Method 525 Spike C Back Catalog number: 92314 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50474 ICP Mix - 0.01 µg / mL Price on request DFP-IS-A Mass-Labelled PCDF/PCB Syringe Spike, 1.2ml, nonane Price on request 676169 D5-Propachlor ESA sodium salt, 1mg Price on request