Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended 679998 4-Ethyltoluene, 100mg Price on request 93002 Aniline Price on request 1800.12-K-IO 2,8-Dibromodibenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 31574-87-5 Price on request