C/04 Clear Glossy Ash Glaze Base #16

Ash Berhens 17
Frit 3134 60
Custer feldspar 8
Ball clay 15

Na2O 0.22 Al2O3 0.15 SiO2 1.59
K2O 0.03 B2O3 0.41 P2O5 0.02
MgO 0.02 TiO2 0.01
CaO 0.73 Fe2O3 0.01

Alumina:Silica ratio is 1.00:10.50
Neutral:Acid ratio is 1.00:2.89
Alk:Neut:Acid ratio is 1.00:0.56:1.62

Expansion: 88.9 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3