Calibrated "to contain" at 20°C, these borosilicate glass moisture traps are used for the determination of water in various materials by distillation with an immiscible solvent. They consist of a full length Standard Taper inner joint for vapor tube connection to distilling flask and a Standard Taper outer joint of the same size for connection to condenser. May be used for ASTM Method D 95 and other similar ASTM methods.