Annealing of this material is accomplished in lehrs. An industrial method to produce a type of this material lays liquid raw materials over tin to form a float. (10[1])Diffusion of interfering ions described by the Nikolsky–Eisenman equation across this material is seen in electrodes, which can be used to measure pH. (-5[1])Sintering particles of this material (10[1])into hollow disks creates fritted examples of these materials that are used as filters. Addition of boron trioxide lowers (10[2])the coefficient of thermal expansion of these materials. Silica, soda ash, and limestone produce the molten form of this material, which is (10[1])then solidified by blowing. (10[1])For 10 (10[1])points, what amorphous material is often used to make lab materials and window panes? (10[1])■END■