Pope Scientific, Inc. Cylindrical Wide Mouth Lab Grade Dewar 8621

Pope Lab Grade Dewars are rated the most efficient glass Dewars in the World! Designed for use with Liquid Nitrogen, this superior ranking is due to rigid quality controls in manufacture and a number of outstanding design and manufacturing features: 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 stopper tops off Dewars to minimize evaporation. The protective aluminum bases on both styles extend the full height of the Dewars. Note that protected vacuum tip-off tubulations are offset to the side to minimize space between the Dewar bottoms and magnetic stirrers. The hemispherical line has been expanded to provide additional Dewars to fit larger flask sizes.