Ammonia as N Back Catalog number: 50152 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673331 Iprovalicarb, 100 µg/ml, Acetonitrile, 5ml Price on request 1392.30-100-IO 3 alpha(H),17ß(H),21ß(H)-3-Hydroxyhopane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 28196-47-6 Price on request 2053.14-100-IO Benzyl benzoate, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 120-51-4 Price on request