EPA Method 525 - Perchlorinates & Phthalates Back Catalog number: 30129 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1635.20-200-T 1-/3-Nitrobenzo[a]pyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 70021-99-7/70021-98-6 Price on request 680581 Hexachlorocyclopentadiene, 100 µg/ml, Cyclohexane Price on request DF-1247-S 1,2,4,7-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request