Ammonia as N Back Catalog number: 50152 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675771 Leptophos, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 3106.12-50-IO 2,2',4,5,5'-Pentabromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 67888-96-4 Price on request 2011.12-100-IO 2',3,4,4',5-Pentachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 65510-44-3 Price on request