Boric acid is used for weatherproofing wood and fireproofing fabrics; as a preservative; manufacturing of cements, crockery, porcelain, enamels, glass, borates, leather, carpets, hats, soaps, artificial gems; in nickeling baths; cosmetics; printing and dyeing, painting; photography; for impregnating wicks; electric condensers; hardening steel. It is also used as an insecticide for cockroaches and black carpet beetles. It is used In the research labs , astringent, antiseptic, antibacterial and antifungal agent. It is used in buffers and for calibration of polyacrylamide gel columns for the separation of oligonucleotides by capillary electrophoresis.