C/04 Quintessence Ash Glaze Base #6

Frit 3134 59
Custer feldspar 4
Ash Berhens 17
EPK 20

Na2O 0.22 Al2O3 0.21 SiO2 1.54
K2O 0.02 B2O3 0.41 P2O5 0.02
MgO 0.02 TiO2 0.00
CaO 0.74 Fe2O3 0.01

Alumina:Silica ratio is 1.00:7.27
Neutral:Acid ratio is 1.00:2.52
Alk:Neut:Acid ratio is 1.00:0.63:1.58

Expansion: 87.7 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3