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Made of borosilicate glass code 7740
Reusable tube is satisfactory for most applications encountered in school work
Performs well when continually used at temperatures up to 500°C, or for short periods to 600°C
Non-sterile; not graduated
These 14x100mm PYREX ignition tubes are made from No. 7740 glass and are satisfactory for most applications encountered in school work where temperatures above 600°C are not required. These rimless tubes perform well when continually used at temperatures up to 500°C, or for short periods to 600°C.