EPA Method 525.2 Pesticide Level 2 Back Catalog number: 92845 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8623.44-10MG meso-Tetraphenylporphyrine, , Solvent-, Unit , # of units-, Cas.no. 20998-75-8 Price on request 2191.8-50-ME Perfluoroctanonic acid, sodium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 335-95-5 Price on request 1725.30-10MG Dibenzo[a,l]pentacene ('1,2:8,9-Dibenzopentacene), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 227-09-8 Price on request