EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3015.5-1ML 1-Pentene, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 109-67-1 Price on request 0860.29-100-IO C29 Ring-C Monoaromatic sterane (5ß(H),10ß(CH3)/5 alpha(H),10 alpha(CH3)), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 205176-21-2 / 81943-51-3 Price on request 681925 Flurenol-butyl ester, 100 µg/ml, Ethyl acetate, Price on request