101.Ferro Frit 3293 Wt: 341.5 Molecular Formula: Na2O 0.920 Al2O3 0.198 SiO2 4.342 MgO 0.068 CaO 0.012 Percentage Analysis: 76.4% SiO2 5.9 % Al2O3 16.7 % Na2O 0.2 % CaO 0.8 % MgO Comments: Sodium silicate frit - no boron; similar frits - Pemco