Annealing of this material is accomplished in lehrs. (10[1])An industrial method to produce a type of this material lays liquid raw materials over tin to (10[1])form a float. (10[6])Diffusion (10[1])of interfering (10[2])ions (10[1])described by the Nikolsky–Eisenman (10[1])equation across this material (10[1]-5[1])is seen in electrodes, (10[1])which can be used to measure pH. (10[4]-5[1])Sintering (10[3])particles of this material (10[2])into hollow (10[1])disks creates fritted examples (-5[1])of these materials (-5[1])that are used as filters. Addition of boron (10[1]-5[1])trioxide (10[2])lowers (10[4])the coefficient (10[8])of (-5[2])thermal (10[1])expansion (10[2])of these (10[1])materials. (10[8]-5[2])Silica, (10[1]-5[1])soda (10[2])ash, (10[3]-5[1])and (-5[1])limestone (10[3])produce (-5[1])the (10[1])molten (10[1])form of this material, (10[4]-5[1])which is (10[1])then solidified (10[1])by (10[1])blowing. (10[10]-5[1])For (10[2])10 (10[2])points, (10[10])what (10[1])amorphous (10[2])material (10[4])is often used to make lab materials (10[1])and window panes? (10[1])■END■ (10[7]0[1])