Results of our studies showed that Etibor-48 (borax pentahydrate) could be used in different types of soda lime silicate glasses, for example; sheet glass by float process, container glasses, crystal glasses and optical glasses. Borax pentahydrate could be used in borosilicate laboratory ware glasses.Trials with colemanite showed that there is much potential to use colemanite in float glasses colored/tinted flas glass varieties or container glasses.