A method providing measurement of melting temperature of glaze powder parti
cles is described. The principle of the method is a direct measurement of t
he light transmittance through a layer of frit powder at a constant heating
rate. Examples are given to measure melting temperatures of a commercially
produced frit and sodium chloride and sodium phosphate (NaPO3) chemicals,
respectively. Specific features of the present measurement method are discu
ssed with respect to the other similar methods.