Lab Grade Dewars

Efficiency assured by rigid bakeout and evacuation control (evacuated to 10-5 torr or better).
Evacuation tip completely shielded for increased protection.
Weighted bases on all models for stability.
Optional full length metal housing on most models for added protection.
No pads between walls on cylindrical dewars eliminating this heat transfer potential.
Supplied polyethylene stopper tops off dewars to minimize evaporation.
Holding time 2-6 hours depending on volume.