BOILING TUBE 25x150MM, CHINA

Description

A Boiling Tube is a larger, more robust version of a standard test tube, specifically designed for heating or boiling small amounts of liquid over a Bunsen burner flame. The 25x150mm size is a standard industrial and educational specification, offering a wider diameter to allow for more vigorous boiling without the liquid splashing out (bumping).

Key Product Features

• Borosilicate 3.3 Glass: Manufactured from high-expansion glass to withstand direct exposure to high-temperature flames and rapid thermal changes.

• Dimensions (25x150mm):

  • Diameter: 25mm (approx. 1 inch), allowing for easy stirring and cleaning.

  • Length: 150mm (approx. 6 inches), providing ample headspace for vapor expansion.

• Uniform Wall Thickness: Engineered with heavy walls to ensure even heat distribution and mechanical strength, reducing the risk of cracking under thermal stress.

• Beaded Rim: Features a reinforced, rounded rim to prevent chipping and to provide a secure grip for test tube holders or to accommodate rubber stoppers.

• High Chemical Resistance: Resistant to most acids, alkalis, and organic solvents, making it suitable for a wide range of chemical reactions.

Technical Specifications

Primary Applications

• Heating Solutions: Ideal for heating chemicals where a standard test tube might be too narrow, causing “bumping” or sudden expulsion of the liquid.

• Qualitative Analysis: Used for observing chemical reactions, color changes, and precipitate formation in a larger, clearer volume.

• Digestions: Suitable for small-scale sample digestions using concentrated acids.

• Educational Use: A staple in school laboratories for teaching the principles of boiling, evaporation, and gas collection.

Safety & Usage Tips

• Uniform Heating: Always tilt the boiling tube at a 45° angle away from yourself and others while heating. Move the tube constantly over the flame to avoid “hot spots.”

• Volume Limits: Never fill a boiling tube more than one-third full when heating to ensure there is enough room for the liquid to boil safely.

• Boiling Chips: For smoother boiling, consider adding a few anti-bumping granules (boiling chips) to prevent sudden splashes.

• Cleaning: The 25mm width allows for the use of a standard test tube brush, making it easier to remove residue compared to narrow-mouth tubes.

Why Choose This Size?

The 25x150mm boiling tube is the “professional” choice for laboratory tasks that are too vigorous for a standard 16mm or 18mm test tube. Its wider aperture and thicker glass provide a significantly higher safety margin when performing reactions that involve heat.