1200 Series - Spectrum's 1200 Series Stoneware Glazes come in a variety of colors and surface finishes. They are formulated to fire in oxidation in an electric kiln. They may be fired in reduction but results will vary- testing is recommended. All samples shown are oxidation fired. All 1200 Series glazes are Dinnerware Safe except 1201 Satin Crackle. Toxicity ratings vary: see 'Specs' under individual colors for this information. Available in liquid Pints and Gallons for brushing only. Apply to Cone 04 bisque and fire to Cone 9/10.