Barnard Slip has historically been used by potters as a source of iron in dark firing glazes. It offers price advantages over using iron oxide and being a clay aids in suspending the materials in the slurry. Barnard has proven valuable for iron slip glazes requiring high clay content. For example, a mixture of 80% Barnard and 20% calcium carbonate will produce a nearly black glaze around cone 9.

See our Safety Data Sheets section under Customer Service for a downloadable copy of the SDS for this product.