Ammonia as (NH4+) Back Catalog number: 50631 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2285.12-K-IO n-Hexylcyclohexane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4292-75-5 Price on request 94476 Piperonyl butoxide Price on request PFDOA Perfluoro-n-dodecanoic acid, 1.2ml x 50ug/ml, methanol Price on request