Ammonia as (NH4+) Back Catalog number: 54212 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11439.19-100-IO Diphenyl-p-tolyl phosphate-d7 (p-tolyl-d7),100 µg/mL,isooctane,1mL, Price on request 675161 Chlorthal-dimethyl, 10 µg/ml, Cyclohexane, 10ml Price on request 3773.6-K-IO 2,6-Dimethylpyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. 108-50-9 Price on request