Sample

Gas

Spec. Surf. Area

Quartz #500

N2

1.96650 m2/g

Quartz #325

N2

1.21950 m2/g

Quartz #200

N2

1.03330 m2/g

Cristobalite #500

N2

1.43800 m2/g

Cristobalite re-milled 24 h

N2

1.8925 m2/g

Vitrous Silica #100

N2

0.68450 m2/g

Vitreous Silica #325

N2

0.88945 m2/g