Bass #54 Quintessence

Silica 2
Frit 3134 42
EPK 18
Kona F-4 26
Whiting 9
Zinc oxide (Calc.) 3
Total 100

Na2O 0.25 Al2O3 0.29 SiO2 1.97
K2O 0.03 B2O3 0.35 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.62 Fe2O3 0.00
ZnO 0.09

Alumina:Silica ratio is 1.00:6.74
Neutral:Acid ratio is 1.00:3.08
Alk:Neut:Acid ratio is 1.00:0.64:1.97

Expansion: 84.6 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3