Internal Standard Back Catalog number: 95665 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9495.9-100-IO Tri-n-propylphosphate-d21, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 1634.10-10MG Cimetidine (free base), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 51481-61-9 Price on request 94893 Chlorinated Pesticides Price on request