GOST 23862.13-1979 Lanthanum, neodymium, gadolinium, dysprosium, yttrium and their oxides. Method of determination of impurities as oxides of praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium
GOST 9147-1980 Laboratory porcelain ware and apparatus. Specifications*, 2023-12-22 Update
GOST 23862.13-1979 history
1979GOST 23862.13-1979 Lanthanum, neodymium, gadolinium, dysprosium, yttrium and their oxides. Method of determination of impurities as oxides of praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium