Ammonium bicarbonate as (NH4+) Back Catalog number: 50830 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4748-ASS-5AC Custom mix of naphthalenes, diluted Same components as S-4747, at lower concentrations 0711.10 Naphthalene 92µg/mL 0713.11 2-Methylnaphthalene 233 0721.12 1,2-Dimethylnaphthalene Price on request 679812 Sulfamerazine, 100 µg/ml, Methanol, 1ml Price on request 50414 Metals Mix 5C Price on request