Ammonium bicarbonate as (NH4+) Back Catalog number: 50830 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 63155 2,2’,4,4’,6,6’-Hexachlorobiphenyl (155) Price on request 2853.11-50-ME 1H,1H,11H-Perfluoroundecan-1-ol , 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 307-70-0 Price on request 95450 PCB Congeners & Hexachlorobenzene Mix #1 Price on request