Cryo dewars with wide-mouth and mesh cover, lab grade

These lab-grade dewars are by far the most energy-efficient glass dewars on the market. The outstanding ranking is due to stringent quality control during manufacturing, along with superior engineering and construction.

Features:

• Weighted bases on all models for stability
• Supplied stopper tops off Dewars to minimise evaporation
• Evacuation tip is completely shielded for increased protection
• Optional full-length metal housing on most models for added protection
• No pads between walls on cylindrical Dewars eliminate this heat transfer potential
• Efficiency assured by rigid bakeout and evacuation control (evacuated to 10^-5 torr or better)

Available:

On both models, the protective aluminium bases reach the entire height of the Dewars.

The shielded vacuum tip-off tubulations are intentionally offset to minimize the space between the dewar bottoms and the magnetic stirrers.

All wide-mouth variants are available with an exterior metal covering that nearly reaches the top rim of the dewar (a slight extension of the glass dewar facilitates pouring). This enclosure offers the security of metal with the efficiency of glass, which is especially useful in handling procedures.

Lab-grade dewars with narrow mouths are suitable for short-term storage or for transporting materials from one room to another. Characteristics include a low evaporation cork stopper, a fully insulated evacuation tip, weighted bases, and a partial aluminum base.

All lab-grade dewars for liquid nitrogen service are made from borosilicate glass. A durable mesh cover enhances grip, provides cushioning against impacts, and offers increased protection.