EPA Method 525.2 - 526 Internal Standard Back Catalog number: 91297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1148.28-K-IO n-Octacosane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 630-02-4 Price on request 91133 1,3-Dinitrobenzene Price on request N674502 DL-Norepinephrine-d6 Hydrochloride, 85%, 2,5mg Price on request