We are looking forward to working with both lines. A. Frits are any part of a glaze recipe that has been melted and then reground. They generally are considered melters or catalysts in most glaze formula. Frits are made from chemicals that are soluble, like borax, to make them less likely to upset a glaze batch's fluidity. Substances like lead, antimony, barium and zinc are fritted to make them less injurious and or volatile.
Ceramic stains are also frits since they are melted and reground carbonates and oxides.
Frits are usually more reliable and predictable in some glazes. That kind of depends on what type of ware you are firing, what size kiln you are using and how full the kiln is. Bisque and glaze firings are different. Thrown pottery will need to fire faster than handbuilt or thick sculptural pieces. Yet, thrown pottery will need to fire much more slowly than poured greenware.