EPA Method 8330 Analyte Back Catalog number: 79073 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0678.27-100-IO Cholest-3,5-diene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 747-90-0 Price on request 10281.16-100-IO 4-tert-Octylphenol-13C6monoethoxylate Price on request 50765 5.% Ammonium hydroxide Price on request