EPA Method 551.1 Internal Standard Back Catalog number: 32103 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0736.15-500-IO 1,4-Dimethyl-5-propylnaphthalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 204256-08-6 Price on request 92300 Pesticide Mix #2 Price on request 0804.12-K-IO 2-Ethyladamantane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 14451-87-7 Price on request