Ammonia as N, 100µg/ml in Water, 100ml Back Catalog number: 54123 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50403 Phosphate as PO4-3 Price on request 50603 ICP Mix - 0.5 µg/mL Price on request 71744 5-(Hydroxymethyl)furfural Price on request