EPA Method 551.1 Surrogate Standard Back Catalog number: 31102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673391 Monocrotophos, 100 µg/ml, Acetonitrile, 5ml Price on request 0408.30-150-CY n-Triacontane, ?13C: -28.60, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 638-68-6 Price on request 8859.7-K-IO 3-Ethyl-2-methylthiopyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. Price on request