EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0421.18-150-CYX5 n-Octadecane, ?13C: -30.71, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 593-45-3 Price on request 71961 4-Formylmorpholine Price on request 72541 Dimethipin Price on request