A cone 10R blood red - without copper but with risk

Friday 28th June 2019

This is G1947U clear glaze with 8% Mason 6021 encapsulated red stain added. The body is P700, a insight-live.com/material/831">Grolleg kaolin porcelain. The one on the right, having significantly reduced clouding within, has one tiny addition: 2% Zircopax. It is acting as a micro-bubble fining agent, producing a brighter color and smoother surface. But there is a possible problem: These stains are not recommended for use above 2300F. Even though the color is very good, cone 10 is just on the edge of the limit temperature, so suitability for food surfaces would require careful testing for leaching cadmium.

Pages that reference this post in the Digitalfire Reference Library:

Mason 6021 Red Stain, G1947U - Cone 10 Glossy transparent glaze, Mason Color Reference Guide, Copper Red, Fining Agent

This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of digitalfire.com.