The alumina shall comply with the foltowing specification:
Characteristics         Measure in g unit         Quaranteed characteristic s (grade G-00)         Maximum Jigure of

chafatleri?l?c s (grade G-0)         Maximum fiQ?re of characteristics(qradeG-1)
Silicon oxide (SiO2 )         % max         0.02         0.03         0.05,
Feırous oxide (Fe2O3)         % max         0.03         Q.D5         0.04
Sum of oxides T(O2 + V203 + CrO3 + MnO         %max         0.01         0.02         0.02
Zinc oxide ( ZnO)         % max         0.01         0.02         0.03
Sum of sodium oxıde and polassium oxkJe Na20 + K2O in temss oi Na20         %max         0.4         0.5         0.4
Phosphorus oxicie ( P2O5)         %max         0.002         0.002         0.002
Catcium oxide (CaO)         % max         0.03         0.05         0.05
Losses of nnass at calcination         %?nax         0.6         0.7         0.7
Specific surface, min         MZiQr         33         33         33
Angl* of wpctap         Ocorooe         30-3?         30-36         30-3S 0.8-1
Bulk density         g/cm3         0.8-1         0.8-1         
Content of a!fa-modification- AI203         %, max         15         15-20         15-20
Granulormetric content:
ı-IOOmkm         % rrass         3-15         3-15         3-15
- 1 00 + 63 mkm         %rnass         28-10         28-40         28-40
? 63-r 32 mtan         % mass         30-50         30-50         30-50
-32mkm         % mass         7-25         7-25         7-25