Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended B-250S-0.35X Dow FR-250, 35 µg/mL in Isooctane, 1ml Price on request 676441 1-Naphthylacetamide, 500mg Price on request 73554 Citral Price on request