Normax Desiccator Lid with Stopcock 250 mm (49 063 31)

Normax Desiccator Lid with Stopcock 250 mm (49 063 31)

The Normax Desiccator Lid with Stopcock (Cat. No. 49 063 31) is a high-quality replacement lid designed for vacuum desiccators with a 250 mm internal diameter. Constructed from durable soda lime glass, it offers excellent transparency, chemical resistance, and reliable sealing performance. The integrated stopcock enables precise regulation of vacuum levels or inert gas flow, making it suitable for controlled drying, moisture-free storage, and other sensitive laboratory procedures that require stable pressure and humidity conditions.

Key Features

• Stopcock assembly for easy vacuum regulation or inert gas introduction

• Durable soda lime glass offering strength, clarity, and resistance to most chemicals

• Precision fit for 250 mm desiccator bases with a ground-glass flange

• Airtight sealing when used with appropriate vacuum grease

• Transparent dome design provides clear visibility of samples without lifting the lid

• Thick glass structure ensures long-term durability and safe laboratory handling

Specifications

• Brand: Normax

• Model: 49 063 31

• Type: Desiccator lid with stopcock

• Material: Soda lime glass

• Compatible base diameter: 250 mm

• Stopcock: Yes, for vacuum or inert gas control

• Seal type: Ground-glass flange

• Function: Replacement lid for vacuum desiccator

• Chemical resistance: Good; suitable for most acids, alkalis, and solvents (excluding HF)

Applications

• Replacement lid for Normax vacuum desiccators with a Ø 250 mm base

• For vacuum drying, moisture-controlled storage, and cooling of heated samples in dry environments

• Suitable for chemical, pharmaceutical, industrial, and academic laboratory settings

• Compatible with desiccants such as silica gel, phosphorus pentoxide, or calcium chloride

Maintenance and Handling

• Apply a thin layer of vacuum grease on the flange to maintain airtight sealing

• Clean the stopcock regularly to ensure smooth and leak-free operation

• Avoid sudden temperature changes to reduce risk of thermal stress or cracking

• Wash using mild detergents and non-abrasive cleaning materials; dry thoroughly before reuse

• Store on a stable, cushioned surface to protect against accidental chipping

Conclusion

The Normax Desiccator Lid with Stopcock 250 mm (49 063 31) delivers reliable performance, excellent visibility, and precise pressure control for a wide range of desiccation applications. With its durable glass construction and dependable airtight sealing, it is an ideal replacement component for laboratories that require consistent, moisture-controlled storage and drying conditions.