Perfluoro-4-ethylcyclohexanesulfonate, 50µg/ml in MeOH, 1,2ml Back Catalog number: PFECHS Availability: In the manufacturer's stock Price on request - + Recommended 1550.19-K-IOX10 n-Nonadecane-d40, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 39756-36-0 Price on request 92575 EPA Method 8240B - Purgeable Internal Standard Price on request C17300100 Terbuthylazine D5 (ethyl D5), certified, 5mg Price on request