product brand	REO Not less	Nd2O3 /REO Not less	RE Impurities contents /REO					The rare earth impurities				igloss Not more than
			CeO2	Pr6O11	Y2O3	Sm2O3	La2O3	Fe2O3	SiO2	CaO	Cl
rubidium oxide  1 #	99	99.99	0..001	0.002	0.003	0.002	0.001	0.001	0.05	0.05	0.05	1
rubidium oxide  2 #	99	99.95	0.01	0.01	0.01	0.01	0.01	0.005	0.05	0.05	0.05	1
rubidium oxide  3 #	99	99.9	resultant 0.1					0.005	0.05	0.05	0.05	1
rubidium oxide  4 #	98	99	resultant 1.0					0.04	0.1	0.15	0.2	1
rubidium oxide  5 #	98	98	resultant  2.0					0.04	0.1	0.5	0.2	1