
Nepheline syenite 60
Frit 3134 10
Whiting 10
Silica 20
Bentonite 4
Cobalt carbonate 0.5

Nepheline syenite 60
Frit 3134 10
Whiting 10
Silica 20
Bentonite 4
Cobalt carbonate 1

Nepheline syenite 60
Frit 3134 10
Whiting 10
Silica 20
Bentonite 4
Cobalt carbonate 1.5

Nepheline syenite 60
Frit 3134 10
Whiting 10
Silica 20
Bentonite 4
Cobalt carbonate 2

Nepheline syenite 60
Frit 3134 10
Whiting 10
Silica 20
Bentonite 4
Cobalt carbonate 2.5