We offer many of our borosilicate colors in powder and frit form. large frit: coarse; approximately .055 inches or 1.397 mm. small frit: finer, approximately .024 inches or .6096 mm. these glass frits and powders have been formulated for use with pyrex®, duran®, kimax®, northstar™ or any other glass with a similar coefficient of thermal expansion (33 coe). Global glaze frit powder for ceramic high transparency, wide range of firing temperature, suitable for border line, interior and exterior wall tiles, small size floor tiles Ceramic frits frit is a ceramic composition formed by fusing inorganic materials into a glass by heating them in smelters and quenching them in water. this process, known as “fritting” was developed to render any soluble and/or toxic components insoluble and/or nontoxic. Ferro > products & services > product category > ceramic coatings ceramic coatings we are an iso 9001:2001 certified global manufacturer offering a wide range of ceramic frits, crushed frits, engobes and glazes for ceramic coating applications including single-fired monoporosa, double fast-firing and porcelain stoneware.