EPA Method 8240A Internal Standard Back Catalog number: 22003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended XA16920100AC Sebuthylazine D5 (ethyl D5), 100 ng/µl, 1.1ml Price on request 0021.16-200-T 1-Hydroxypyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 5315-79-7 Price on request 58249 Indium (In) Price on request