Watch Glass$20.95
Borosilicate glass Claisen adapter with a standard taper outer joint at the top of the main tube for use with jointed thermometers. Sidearm has a standard taper upper outer ground joint and main tube has a lower inner joint, both being of the same size.Thermometer joint size 10/18. Sidearm joint size 19/22. Lower inner joint size 19/22.
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