Description | Five stoppered jars containing samples of: Ferroniobium (FeNb), Niobium Oxide standard (Nb2O5), Niobium Oxide optical grade (Nb2O5), Ammonium niobium oxalate (NAmOx) and Niobium oxide hydrate (H2NbO2), each labelled respectively: 'FeNb STD', 'Nb 205 OPTICAL GRADE', 'AMMONIUM NIOBIUM OXALATE', 'Nb OXIDE HYDRATE HY-340', 'Nb 205 STD'. Plus one broken sample jar stored separately. |