Mkulu borosilicate galasi, ndi mtundu wa kufufuma otsika, kutentha zosagwira, mphamvu yapamwamba, mkulu kuuma, mkulu kuwala transmittance ndi High Chemical bata wapadera galasi zakuthupi, poyerekeza ndi galasi wamba, sanali poizoni mbali, katundu mawotchi, t. ..