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samedi 30 juillet 2011

C/04 Quintessence Ash Glaze Base #5

Frit 3134 31
Frit 3110 31
Ash Berhens 17
Ball clay 21

Na2O 0.30 Al2O3 0.20 SiO2 1.97
K2O 0.03 B2O3 0.26 P2O5 0.02
MgO 0.02 TiO2 0.01
CaO 0.65 Fe2O3 0.01

Alumina:Silica ratio is 1.00:9.99
Neutral:Acid ratio is 1.00:4.42
Alk:Neut:Acid ratio is 1.00:0.46:2.02

Expansion: 91.0 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

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