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Ai T1-2440 Dry Ice Glass Vacuum Cold Trap

In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases into a liquid or solid. The most common objective is to prevent vapors being evacuated from an experiment from entering a vacuum pump where they would condense and contaminate it. Particularly large cold traps are necessary when removing large amounts of liquid as in freeze drying.

Pumps that use oil either as their working fluid (diffusion pumps), or as their lubricant (mechanical rotary pumps), are often the sources of contamination in vacuum systems. Placing a cold trap at the mouth of such a pump greatly lowers the risk that oil vapors will back stream into the vacuum cavity.

Care should be taken when using a cold trap not to condense liquid oxygen (a light blue liquid) into the cold trap. Liquid oxygen is potentially explosive, and this is especially true if the trap has been used to trap solvent. Liquid oxygen can be condensed into a cold trap if a pump has sucked air through the trap when the trap is very cold.

T1-2440 features

  • Utilizes dry ice for optimal efficiency
  • Comes with scissor jack for easy collection flask removal
  • Easy to clean all glass construction
  • Small footprint
  • Setup in a few minutes
  • PTFE 24/40 to KF25 adapter NOT included



 Vacuum inlet/outlet 24/40 joint                     
 Collection flask capaclity One liter
 Setup dimensions (WxDxH)
 6 x 11 x 28″
 Shipping dimensions (WxDxH) 30 x 18 x 9″
 Shipping weight 16 lbs

Standard package


 Part description Quantity
Part image
 Cold trap with lid, gasket, two 24/40 joint vacuum connectors,
and one 35/20 joint drain port
1 set 
 1L collection flask with 35/20 joint1 pc
 Premium food grade silicone vacuum hose6 ft
 Lab stand1 pc
 Boss head clamp2 pcs
 4 x 4″ stainless steel scissor jack (min. height 1.75, max. height 6″)1 pc
 Collection flask cork ring stand1 pc
 Stainless steel ball joint clamp1 pc
 Cold trap support 1 pc 
 Lab chain clamp1 pc
 User’s manual1 pc


Note: We do not offer warranty on glassware. Please contact us if you see any imperfections on the glassware once you received your package.