EPA Method 8040 - Surrogate Standard Back Catalog number: 80403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 51066 ASTM D-4815 Calibration Mix #3 Price on request 0956.11-K-IO 2,5,7-Trimethylbenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16587-65-8 Price on request N-11891-1G Ethyl carbamate, 1g Price on request