A primary ingredient as a flux in a glaze.
Tax Excluded
Colemanite is a natural source of boron and calcium and is a powerful melter. If you use too much it can cause a glaze to delayer from a ware (decrepitation).
It is advisable to sieve with 200# mesh and remove coarse materials.
Source: UK
For advice and further reading, read our 'Using Raw Materials' PDF.
B2O3 50.80%, CaO 27.30%*
*General analysis, not supplied by the supplier.
Considered a nuisance dust; therefore, we recommend wearing an FFP3/P3 Mask. Keep working areas free of dust by cleaning up with a damp sponge.
Children should not work with raw materials.
See the SDS in the product attachments for more information.
