EPA Method 8240A - Purgeable Surr Std Back Catalog number: 20002 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676795 4-n-Octylphenol-mono-ethoxylate, 1 µg/ml, Acetone Price on request 1296.17-200-T 8-Methylbenzo[b]naphtho[2,3-d]thiophene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 24964-07-6 Price on request 56081 Thallium (Tl) Price on request