EPA Method 645 Analytes Back Catalog number: 40059 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0181.12-K-IO 2-Bromodibenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 22439-61-8 Price on request 98859 Formaldehyde-DNPH Level 2 (0.5ug/mL) Price on request 681366 9-Hydroxyphenanthrene, 10mg Price on request