BOILING TUBE 25×200 MM, CHINA

Description

The 25x200mm Boiling Tube is an oversized laboratory vessel designed for applications requiring a larger volume or greater headspace than standard tubes. The extra length (200mm) is particularly useful for reactions that produce significant foam or vigorous boiling, providing a safety buffer to prevent liquid from escaping the tube.

Key Product Features

• Extra-Long Design (200mm): At 20cm in length, this tube offers superior headspace, making it ideal for heating reactive mixtures or for use in gas collection experiments.

• Borosilicate 3.3 Glass: Built to withstand direct flame heating and extreme thermal gradients. This material ensures the tube will not shatter when moved from high heat to room temperature.

• Heavy Wall Construction: Thicker glass walls provide enhanced mechanical durability and more uniform heat conduction, reducing “hot spots” during boiling.

• Beaded Rim: A reinforced rim allows for secure handling with test tube clamps and provides a tight fit for standard rubber or silicone stoppers.

• High Capacity: With a 25mm diameter and 200mm length, it holds significantly more volume than the common 150mm variant, suitable for larger-scale qualitative tests.

Technical Specifications

Primary Applications

• Vigorous Boiling: The 200mm height is specifically designed to contain “bumping” or splashing during the heating of concentrated solutions.

• Gas Evolution Experiments: Ideal for reactions that release gases (e.g., heating potassium chlorate or calcium carbonate), as the length allows for easier attachment of delivery tubes.

• Fractional Distillation (Small Scale): Can be used as a primary heating vessel in micro-distillation setups.

• Sample Digestion: Often used in environmental or food science for the acid digestion of samples where height prevents acid fumes from escaping too quickly.

Boiling Tube 25x200mm – Extra-Long Heavy-Duty Borosilicate 3.3

The 25x200mm Boiling Tube is an oversized laboratory vessel designed for applications requiring a larger volume or greater headspace than standard tubes. The extra length (200mm) is particularly useful for reactions that produce significant foam or vigorous boiling, providing a safety buffer to prevent liquid from escaping the tube.

Key Product Features

• Extra-Long Design (200mm): At 20cm in length, this tube offers superior headspace, making it ideal for heating reactive mixtures or for use in gas collection experiments.

• Borosilicate 3.3 Glass: Built to withstand direct flame heating and extreme thermal gradients. This material ensures the tube will not shatter when moved from high heat to room temperature.

• Heavy Wall Construction: Thicker glass walls provide enhanced mechanical durability and more uniform heat conduction, reducing “hot spots” during boiling.

• Beaded Rim: A reinforced rim allows for secure handling with test tube clamps and provides a tight fit for standard rubber or silicone stoppers.

• High Capacity: With a 25mm diameter and 200mm length, it holds significantly more volume than the common 150mm variant, suitable for larger-scale qualitative tests.

Technical Specifications

Primary Applications

• Vigorous Boiling: The 200mm height is specifically designed to contain “bumping” or splashing during the heating of concentrated solutions.

• Gas Evolution Experiments: Ideal for reactions that release gases (e.g., heating potassium chlorate or calcium carbonate), as the length allows for easier attachment of delivery tubes.

• Fractional Distillation (Small Scale): Can be used as a primary heating vessel in micro-distillation setups.

• Sample Digestion: Often used in environmental or food science for the acid digestion of samples where height prevents acid fumes from escaping too quickly.

Safety & Maintenance

• Heating Technique: As with all boiling tubes, point the mouth away from yourself and others. Use a gentle “swirling” motion over the flame to ensure the contents heat evenly.

• Stopper Size: Typically requires a No. 4 or No. 5 rubber stopper (depending on wall thickness) for an airtight seal.

• Cleaning: The wide 25mm opening is easy to clean with a standard large-diameter tube brush. It is fully autoclave-safe for sterilization.

Why Choose 200mm vs. 150mm?

The extra 50mm of length provides a critical safety margin. If you are working with substances known to foam or “bump” unexpectedly, the 25x200mm tube gives you the extra time and space to remove the tube from the heat source before the contents overflow, making it the preferred choice for advanced chemistry and research.