Kuhne’s Fermentation Tube

Product Code : SCL-LG-11977

The Kuhne’s Fermentation Tube is a biology laboratory apparatus used for demonstrating carbon dioxide production during alcoholic fermentation by yeast. It is intended for students, teachers and laboratory demonstrators who need a visible method for studying anaerobic respiration, gas evolution and the biochemical conversion of sugar by yeast.

Product Description

Kuhne’s Fermentation Tube allows gas released during yeast fermentation to collect in a closed section of the apparatus. As carbon dioxide accumulates, it displaces the fermentation mixture and produces an observable change in the liquid level. This provides clear evidence that gas is formed during the process.

The recognized apparatus form has a closed vertical arm connected to a side arm or bulb through which the fermentation mixture is introduced. The capacity, material, graduations and exact configuration of this Science Lab Supplies model must be confirmed before publication or ordering. Related apparatus can be found under biology laboratory equipment.

Key Features

• Visible gas collection: Collects gas released during yeast fermentation for direct observation.
• Liquid-displacement principle: Shows gas production through a change in the fermentation mixture’s level.
• Anaerobic-respiration demonstration: Supports lessons on the conversion of sugar into ethanol and carbon dioxide by yeast.
• Closed observation arm: Provides a defined space in which fermentation gas can accumulate.
• Side filling section: Enables the yeast and sugar mixture to be introduced into the apparatus.
• No electrical power required: Operates as a passive laboratory demonstration device.
• Suitable for comparative work: Allows students to compare gas evolution under carefully controlled experimental conditions.

Technical Specifications

What’s Included in the Kit

• One Kuhne’s Fermentation Tube — capacity and configuration to be confirmed

Yeast, sugar solution, cotton plug, reagents, measuring equipment and other laboratory accessories are not confirmed as included.

Applications and Uses

• Demonstrating alcoholic fermentation by yeast.
• Observing carbon dioxide production during anaerobic respiration.
• Studying liquid displacement caused by accumulated gas.
• Explaining the role of yeast enzymes in sugar fermentation.
• Comparing fermentation activity under controlled conditions.
• Supporting botany, microbiology and general biology practical lessons.

Institutions can explore additional teaching aids under general biology products.

How to Use Kuhne’s Fermentation Tube

1. Inspect the apparatus for cracks, chips, blocked passages or contamination.
2. Prepare the yeast and sugar mixture according to the approved laboratory method.
3. Introduce the mixture carefully through the open side section.
4. Fill the closed arm completely so that no unintended air pocket remains at the start.
5. Close the side opening as specified in the experimental protocol without creating unsafe pressure.
6. Keep the apparatus under the controlled conditions stated in the laboratory method.
7. Observe gas accumulation and record the corresponding change in liquid level.
8. Compare observations only when concentration, time, temperature and other variables are controlled.

Safety note: Wear suitable laboratory PPE and handle the apparatus carefully. If potassium hydroxide is used to test whether the collected gas is carbon dioxide, it must be handled only under trained supervision because it is corrosive.

Care & Maintenance

• Rinse the tube immediately after use so that yeast and sugar residues do not dry inside it.
• Use a non-abrasive cleaning method compatible with the confirmed material.
• Do not insert rigid tools that could scratch, puncture or break the closed arm.
• Store the clean, dry apparatus in a protected rack or padded cabinet.

Why Choose Science Lab Supplies?

Science Lab Supplies manufactures and exports scientific laboratory instruments, educational apparatus and experiment setups. Its range supports schools, colleges, universities and institutional science laboratories. Buyers can confirm capacity, construction, packing and export requirements before procurement. Associated vessels and accessories are available in the laboratory glassware range.

Frequently Asked Questions

What is Kuhne’s Fermentation Tube used for?

It is used to demonstrate carbon dioxide production during alcoholic fermentation by yeast under anaerobic conditions.

What happens inside the fermentation tube?

Yeast acts on a suitable sugar solution and produces ethanol and carbon dioxide. The carbon dioxide collects in the closed arm and displaces the liquid.

Does the tube measure fermentation rate accurately?

It can show relative gas production and changes in liquid level. Quantitative use depends on whether the supplied model has verified graduations and calibration.

Why must the closed arm be free from air initially?

Pre-existing air can be mistaken for gas produced during fermentation. Filling the arm correctly improves the reliability of the observation.

Can potassium hydroxide be used to identify the gas?

An approved experiment may use potassium hydroxide to absorb carbon dioxide. Because potassium hydroxide is corrosive, only trained personnel should handle it.

Is Kuhne’s Fermentation Tube suitable for schools?

Yes, it supports supervised biology demonstrations of fermentation and anaerobic respiration when an age-appropriate procedure and suitable safety controls are used.

Confirm the required capacity and configuration, then browse more science laboratory equipment from Science Lab Supplies.

Recommended image ALT text: Kuhne’s Fermentation Tube with closed vertical arm and side bulb for demonstrating carbon dioxide production by yeast.