Bass #40 Quintessence

Silica 10
Frit 3134 32
EPK 13
Kaolin (Calc.) 10
Kona F-4 16
Whiting 19
Total 100

Na2O 0.18 Al2O3 0.30 SiO2 1.97
K2O 0.02 B2O3 0.27 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.79 Fe2O3 0.00

Alumina:Silica ratio is 1.00:6.64
Neutral:Acid ratio is 1.00:3.47
Alk:Neut:Acid ratio is 1.00:0.57:1.97

Expansion: 81.5 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3