Across International T1 Glass Vacuum Cold Trap for Safe Vacuum Operations



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 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
  • Free six feet 3/8" white premium food grade silicone vacuum tubing (a $40 value) included


 Vacuum inlet/outlet
 Glass 3/8" hose barb x 2
 Collection flask capaclity
 One liter
 Setup dimensions (WxDxH)
 6 x 10 x 28"

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


Standard package

 Part description


Part image

 Cold trap with lid, gasket, two 3/8" hose barb vacuum connectors,
 and one 35/20 joint drain port
1 set
 1L collection flask with 35/20 joint
1 pc
 Premium food grade silicone vacuum hose 6 ft
 Lab stand
1 pc

 Boss head clamp
2 pcs
 4 x 4" stainless steel scissor jack (min. height 1.75, max. height 6")
1 pc
 Collection flask cork ring stand 1 pc
 Stainless steel ball joint clamp 1 pc
 Cold trap support  1 pc  
 Lab chain clamp 1 pc
 User's manual
1 pc

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