EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1083.24-K-IO n-Octadecylbenzene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4445-07-2 Price on request 2623.33-100-IO 17?(H),21?(H)-(22RS)-Trishomohopane,100 µg/mL,isooctane,1mL, Price on request 10002 CLP Semi-Volatiles Base/Neutrals Mix #2 Price on request