U-shaped drying tube, With Side Arms

A U-shaped drying tube with side arms is a specialized piece of laboratory glassware used to remove moisture from gases or to protect air-sensitive reactions from atmospheric humidity.

• Material: Typically made from Borosilicate 3.3 glass for high thermal resistance and chemical durability.
• Design: A U-shaped body with two lateral side arms for connecting flexible hoses or tubing.
• Common Sizes:

• 100 x 12mm

• 125 x 15mm

• 150 x 20mm

• 200 x 20mm

• Gas Scrubbing: Used to "scrub" moisture from generated gases (like Oxygen or Hydrogen) by passing them through a solid desiccant.
• Reaction Protection: Placed at the exit of a reaction setup to prevent moisture-laden air from entering the vessel while still allowing pressure to equalize.
• Desiccants Used: Commonly filled with anhydrous calcium chloride, silica gel, or potassium hydroxide. 

1. Packing: Place a small plug of glass wool or cotton at the base of each arm to prevent desiccant particles from escaping or blocking gas flow.
2. Filling: Add the desiccant into the U-bend, ensuring it is packed loosely enough to allow free gas movement.
3. Connection: Use the side arms to attach rubber or silicone tubing, ensuring airtight seals with hose clamps if necessary.
4. Monitoring: The clear glass allows for visual monitoring of desiccant saturation (e.g., silica gel changing from blue to pink).

Specifications:

• Material: 3.3 Borosilicate glass
• Design: U with side arms, Rimmed
• Neck: Rimmed
• Brand: NONE
• Product of China