EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0417.14-150-CYX10 n-Tetradecane , ?13C: -33.13, 150ug/ml, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no. 629-59-4 Price on request 11774.12-100-IO 2,3,3',4,4',5,5',6-Octachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 97859 Formaldehyde (10 ppm) Price on request