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Chemglass, CG-1320-12, Bump Trap, 250mL, Rotary Evaporator, 24/40 Top Outer Joint, 29/42 Lower Inner Joint
Used between the vapor tube and evaporation flask on a rotary evaporator to prevent contents of the flask from being drawn into the condenser in the event of "bumping" Traps have a 24/40 top outer joint and 29/42 of lower inner joint.
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