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What is Temperature of glass bead sterilizer is and explain in detail?
Glass bead (hot salt) sterilizers used to consist of either hot salt or glass beads as a medium for dry heat sterilization. 
The temperature range employed was between 425°F (218°C) and 475°F (246°C) for 5 seconds.
Ref :Grossman’s endodontics, 13th edition , pg no:198