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These vacuum traps are designed for large volume solvent removal by vacuum. The 40/35 standard taper joint connects the trap body with the stopper. The hose connections are 1/2" O.D. The 500 mL version fits 1,900 mL Dewar flasks and is 130 mm wide x 310 mm high. The 1,000 mL version fits 4,300 mL Dewars and is 130 mm wide x 340 mm high.
Spare/replacement trap bodies and stoppers (the upper part) are also available.