Parameters :- Super Grade : A – Grade : B-Grade K2O :- 11 - 12%; 9 – 10 %; 6 - 8 % Na2O :- 2 - 3%; 3 – 4 %; 3 – 5 % SiO2:- 65 – 67%; 66 – 68 %; 66 – 69 % Al2O3 :- 16 - 19%; 16 - 18 %; 15 – 17% Fe2O3 :- 0.02 – 0.06 %; 0.10 – 0.15 %; 0.10 – 0.20 % CaO:- 0.30 – 0.50 %; 0.30 – 0.50 %; 0.30 -0.50 LOI:- < 1%; < 1%; < 1% Powder :- Mesh Size: 80/ 100 ; 200/240 ; 300/325 Packing: 25/40/50 Kg Bags And Jumbo Bags. Colors available in Pink, White and Grey. Uses: Potash Feldspar is used for Frits, Ceramic, Glazes, Sanitary ware, Table Ware, Glass, TV Tubes, Container Glass, Insulators etc.