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  • Hirschmann, Inc
    Hirschmann, Inc
    502.240.0287
    2700 Holloway Rd Ste 104, 40299-6128  Louisville

    70 to 80 per cent of the weight of borosilicate glass consists of sand. Seven to 13 per cent are accounted for by boron trioxide, four to eight per cent by sodium oxide and potassium oxide and two to seven per cent by aluminium oxide. It has a higher chemical resistance than soda-lime glass and a h…