EPA Method 8330Mix #1 Back Catalog number: 91874 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3444.6-100-AN Methidathion, 100μg/mL in Acetonitrile, 1ml Price on request 1560.8-K-ME n-Octane-d18, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 17252-77-6 Price on request 9397.20-100-ME Citalopram hydrobromide Price on request