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Vacuum Bell Jars

Vacuum bell jars are essential laboratory apparatuses used to create and maintain low-pressure environments for various scientific and industrial applications. These bell jars are typically made of thick-walled borosilicate glass or acrylic to withstand the pressure differential when a vacuum is applied.

Key specifications include:

Material: High-strength borosilicate glass or durable acrylic, providing chemical resistance and clarity for visual observation.
Pressure Rating: Capable of maintaining vacuums as low as 10^-3 to 10^-6 torr, depending on the pump and seal quality.
Sizes: Available in various diameters, typically ranging from 100 mm to 500 mm, and heights from 150 mm to 600 mm, to accommodate different experimental setups.
Base Compatibility: Often used with metal or composite bases that feature vacuum-tight seals and ports for vacuum pump connections.

Vacuum bell jars are commonly employed in applications such as degassing, vacuum drying, thin film deposition, and vacuum encapsulation. Their design ensures a robust and stable environment for experiments requiring low-pressure conditions. Proper handling and maintenance, including regular inspection for cracks and seal integrity, are crucial for safe and effective operation.

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