EPA Method 525 Spike B Back Catalog number: 92313 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1501.24-K-IO n-Octadecylcyclohexane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4445-06-1 Price on request 1647.7-1ML Pentafluorobenzoyl chloride, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 2251-50-5 Price on request 72801 Aminopyralid Price on request